Add permissionByModule to user.permissions service

Problem/Motivation

As #2295469: Add support for static permission definitions with *.permissions.yml → removed hook_permissions from core renders

$perms = module_invoke($module, 'permission');

useless. This breaks drush https://github.com/drush-ops/drush/pull/830

Proposed resolution

Add method permissionsByModule.

Remaining tasks

Write the mock for the added test.

cd core
phpunit modules/user/tests/src/Unit/PermissionHandlerTest.php

give

1) Drupal\Tests\user\Unit\PermissionHandlerTest::testPermissionsYamlStaticAndCallback
Drupal\Core\Controller\ControllerResolverInterface::getControllerFromDefinition('Drupal\user\Tests\TestPermiss...iption') was not expected to be called more than once.

User interface changes

API changes