Drupal dependency injection

Problem/Motivation
The Drupal and DrupalPractice request depency injection

Proposed resolution
Inject objects

Remaining tasks

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Line src/AliasStorageHelper.php
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85 \Drupal calls should be avoided in classes, use dependency injection instead
166 Method Drupal\pathauto\AliasStorageHelper::loadBySource() should return array|bool but return statement is missing.
181 Method Drupal\pathauto\AliasStorageHelper::deleteBySourcePrefix() should return bool but return statement is missing.
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Line src/Entity/PathautoPattern.php
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432 Instantiated class Drupal\pathauto\Entity\ContextNotFoundException not found.
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Line src/Form/PatternEditForm.php
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277 Method Drupal\pathauto\Form\PatternEditForm::save() should return int but return statement is missing.
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Line src/PathautoGenerator.php
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150 \Drupal calls should be avoided in classes, use dependency injection instead
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Line src/PathautoItem.php
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36 Method Drupal\pathauto\PathautoItem::postSave() should return bool but return statement is missing.
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Line src/PathautoWidget.php
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41 \Drupal calls should be avoided in classes, use dependency injection instead
51 \Drupal calls should be avoided in classes, use dependency injection instead
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Line src/Plugin/Action/UpdateAction.php
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25 \Drupal calls should be avoided in classes, use dependency injection instead
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Line src/Plugin/pathauto/AliasType/EntityAliasTypeBase.php
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278 \Drupal calls should be avoided in classes, use dependency injection instead
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User interface changes

API changes

Data model changes