Fix the issues reported by phpcs

The issue summary should always describe what the issue is trying to fix and, in the case, of coding standards issues, show which command has been used, which arguments have been used, and which report that command shown.

Issue summary updated.

+   * Check if the module exits in the uninstall_unexisting table.
    *

+   * Create a module folder, .info.yml and .install files for an existing
+   * module in the uninstall_unexisting table.

Check and Create must be declined in the third person singular.

    * @param string $module_name
-   *    A module name.
-   *
-   * @return void
+   *   A module name.

In parameter descriptions, the definitive article is used, not the indefinite article.

    * @param string $machine_name
-   *    Machine name of a module.
+   *   Machine name of a module.

The correct description is The module machine name. which is the same description used for setNewModule($machine_name).

-   *    Name of the module to load.
+   * @param string $module_name
+   *   Name of the module to load.

The description is missing the definite article.

-   *    TRUE is exists, FALSE otherwise.
+   * @return bool
+   *   TRUE is exists, FALSE otherwise.

Since that line is edited, the return value description needs to be corrected too for example to TRUE if the module exists, FALSE otherwise. or TRUE if the module exists.

-  // Table to store modules information
+  // Table to store modules information.

The definite article is missing at the beginning of the description.

-//  const STATUS_TO_ENABLE = 'to_enable';
+  // const STATUS_TO_ENABLE = 'to_enable';.

Periods are not added to commented out code.

+/**
+ * ServiceClass containing methods for modules manipulation.
+ */

ServiceClass is not an English word.
containing methods for modules manipulation is too generic.

+   * UninstallUnexistingService constructor.
+   *
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $handler
+   *   The Drupal module handler.
+   * @param \Drupal\uninstall_unexisting\Service\UninstallUnexistingRepository $uu_repository
+   *   Contains database helper methods.
+   * @param \Drupal\Core\Extension\ModuleExtensionList $extension_list_module
+   *   The Drupal extension list.
+   */

The description for a constructor starts with Constructs a new followed by the class name (namespace included), and ends with object.
It is not necessary to add Drupal in the parameter descriptions.
$uu_repository is a repository.

/**
  * @file
+ * Contains the hooks implementations for this module.
  */

The correct description is Hook implementations for the Uninstall unexisting module.

Addressed 12.
12.1 still needs to be addressed. Changes are committed to MR1. Please review.

Addressed 12.1. Please review.

Hi @nitin_lama & @Yashaswi18,

The changes you committed on MR!1 can be applied successfully, however, errors were still reported. Please see below:

uninstall_unexisting git:(master) ✗ curl https://git.drupalcode.org/project/uninstall_unexisting/-/merge_requests/1.diff | patch -p1
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 18960    0 18960    0     0  31839      0 --:--:-- --:--:-- --:--:-- 32354
patching file src/Service/ModuleHandlerOverride.php
patching file src/Service/UninstallUnexistingInterface.php
patching file src/Service/UninstallUnexistingRepository.php
patching file src/Service/UninstallUnexistingRepositoryInterface.php
patching file src/Service/UninstallUnexistingService.php
patching file src/UninstallUnexistingServiceProvider.php
patching file uninstall_unexisting.install
patching file uninstall_unexisting.module
➜  uninstall_unexisting git:(master) ✗ ..
➜  contrib git:(master) ✗ phpcs --standard=Drupal,DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml,twig uninstall_unexisting

FILE: ...es/contrib/uninstall_unexisting/src/Service/UninstallUnexistingService.php
--------------------------------------------------------------------------------
FOUND 1 ERROR AND 7 WARNINGS AFFECTING 8 LINES
--------------------------------------------------------------------------------
   8 | ERROR   | [x] Use statements should be sorted alphabetically. The first
     |         |     wrong one is Drupal\Core\Extension\Extension.
  62 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
  80 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
 102 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
 107 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
 129 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
 133 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
 149 | WARNING | [ ] \Drupal calls should be avoided in classes, use dependency
     |         |     injection instead
--------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------


FILE: ...ninstall_unexisting/src/Service/UninstallUnexistingRepositoryInterface.php
--------------------------------------------------------------------------------
FOUND 1 ERROR AFFECTING 1 LINE
--------------------------------------------------------------------------------
 23 | ERROR | [x] Inline comments must end in full-stops, exclamation marks,
    |       |     question marks, colons, or closing parentheses
--------------------------------------------------------------------------------
PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
--------------------------------------------------------------------------------

Time: 255ms; Memory: 10MB

Kindly check

Thanks,
Jake

There are still PHP_CodeSniffer errors/warnings to fix.

avpaderno → changed the visibility of the branch 3294476-gitlab-ci-reports to hidden.

MR !1 fixed all the PHP_CodeSniffer errors/warnings.