Add "Set Title" action.

New action added.

This looks like a great improvement, thanks @VladimirAus for the contribution. The tests are reporting 3 issues, 2 of which a caused by the merge request. The third one is from a different code fraction and should be gone after you've rebased the fork.

@VladimirAus:
Weird local vs prod environment issue:
Local works, production throws warnings/errors and crashes out:

Error: Call to a member function replaceClear() on null in Drupal\eca_base\Plugin\Action\Title->execute() (line 44 of /app/web/modules/contrib/eca/modules/base/src/Plugin/Action/Title.php).

Warning: Undefined property: Drupal\eca_base\Plugin\Action\Title::$tokenService in Drupal\eca_base\Plugin\Action\Title->execute() (line 44 of /app/web/modules/contrib/eca/modules/base/src/Plugin/Action/Title.php)
#0 /app/web/core/includes/bootstrap.inc(164): _drupal_error_handler_real(2, 'Undefined prope...', '/app/web/module...', 44)
#1 /app/web/modules/contrib/eca/modules/base/src/Plugin/Action/Title.php(44): _drupal_error_handler(2, 'Undefined prope...', '/app/web/module...', 44)
#2 /app/web/modules/contrib/eca/src/Entity/Objects/EcaAction.php(102): Drupal\eca_base\Plugin\Action\Title->execute(NULL)
#3 /app/web/modules/contrib/eca/src/Processor.php(188): Drupal\eca\Entity\Objects\EcaAction->execute(Object(Drupal\eca\Entity\Objects\EcaAction), Object(Drupal\eca_form\Event\FormBuild), Array)
#4 /app/web/modules/contrib/eca/src/Processor.php(190): Drupal\eca\Processor->executeSuccessors(Object(Drupal\eca\Entity\Eca), Object(Drupal\eca\Entity\Objects\EcaAction), Object(Drupal\eca_form\Event\FormBuild), Array)
#5 /app/web/modules/contrib/eca/src/Processor.php(146): Drupal\eca\Processor->executeSuccessors(Object(Drupal\eca\Entity\Eca), Object(Drupal\eca\Entity\Objects\EcaEvent), Object(Drupal\eca_form\Event\FormBuild), Array)
#6 /app/web/modules/contrib/eca/src/EventSubscriber/EcaBase.php(76): Drupal\eca\Processor->execute(Object(Drupal\eca_form\Event\FormBuild), 'eca.form.build')
#7 [internal function]: Drupal\eca\EventSubscriber\EcaBase->onEvent(Object(Drupal\eca_form\Event\FormBuild), 'eca.form.build', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#8 /app/web/core/lib/Drupal/Component/EventDispatcher/ContainerAwareEventDispatcher.php(111): call_user_func(Array, Object(Drupal\eca_form\Event\FormBuild), 'eca.form.build', Object(Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher))
#9 /app/web/modules/contrib/eca/src/Event/TriggerEvent.php(73): Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object(Drupal\eca_form\Event\FormBuild), 'eca.form.build')
#10 /app/web/modules/contrib/eca/modules/form/src/HookHandler.php(47): Drupal\eca\Event\TriggerEvent->dispatchFromPlugin('form:form_build', Array, Object(Drupal\Core\Form\FormState))
#11 /app/web/modules/contrib/eca/modules/form/eca_form.module(25): Drupal\eca_form\HookHandler->alter(Array, Object(Drupal\Core\Form\FormState))
#12 /app/web/core/lib/Drupal/Core/Extension/ModuleHandler.php(545): eca_form_form_alter(Array, Object(Drupal\Core\Form\FormState), 'taxonomy_term_r...')
#13 /app/web/core/lib/Drupal/Core/Form/FormBuilder.php(840): Drupal\Core\Extension\ModuleHandler->alter('form', Array, Object(Drupal\Core\Form\FormState), 'taxonomy_term_r...')
#14 /app/web/core/lib/Drupal/Core/Form/FormBuilder.php(284): Drupal\Core\Form\FormBuilder->prepareForm('taxonomy_term_r...', Array, Object(Drupal\Core\Form\FormState))
#15 /app/web/core/lib/Drupal/Core/Entity/EntityFormBuilder.php(48): Drupal\Core\Form\FormBuilder->buildForm(Object(Drupal\taxonomy\TermForm), Object(Drupal\Core\Form\FormState))
#16 /app/web/core/modules/taxonomy/src/Controller/TaxonomyController.php(26): Drupal\Core\Entity\EntityFormBuilder->getForm(Object(Drupal\taxonomy\Entity\Term))
#17 [internal function]: Drupal\taxonomy\Controller\TaxonomyController->addForm(Object(Drupal\taxonomy\Entity\Vocabulary))
#18 /app/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array(Array, Array)
#19 /app/web/core/lib/Drupal/Core/Render/Renderer.php(592): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#20 /app/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(124): Drupal\Core\Render\Renderer->executeInRenderContext(Object(Drupal\Core\Render\RenderContext), Object(Closure))
#21 /app/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array)
#22 /app/vendor/symfony/http-kernel/HttpKernel.php(181): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#23 /app/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object(Symfony\Component\HttpFoundation\Request), 1)
#24 /app/web/core/lib/Drupal/Core/StackMiddleware/Session.php(58): Symfony\Component\HttpKernel\HttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#25 /app/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#26 /app/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(106): Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#27 /app/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(85): Drupal\page_cache\StackMiddleware\PageCache->pass(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#28 /app/web/core/modules/ban/src/BanMiddleware.php(50): Drupal\page_cache\StackMiddleware\PageCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#29 /app/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\ban\BanMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#30 /app/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#31 /app/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(51): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#32 /app/web/core/lib/Drupal/Core/DrupalKernel.php(704): Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true)
#33 /app/web/index.php(19): Drupal\Core\DrupalKernel->handle(Object(Symfony\Component\HttpFoundation\Request))
#34 {main}

That sounds like you're using ECA 1.1 on production, while this patch only works with the 2.0.x release.

@VladimirAus Any chance to address my questions in #6?

@jurgenhaas Yep, I'm planning to address it in the coming weeks.
No ETA though, sorry.

@VladimirAus are you coming to DrupalCon Portland? We could then probably address this there.

@VladimirAus hope you don't mind a friendly ping.

Still here. Stuck in a rut of Drupal 11 and then jumping on this guy.
@jurgenhaas feel free to ping me.

Ping ;-)

I've rebased the MR to the latest dev branch. @VladimirAus maybe this is an issue to be addressed in Singapor?