Add search and reset feature to taxonomy admin form

Rerolled the patch

Thanks for contributions. 🥂
Switching to MRs, please commit to gitlab.

phpcs returns

FILE: /Users/tesboss/_PROJECTS/drupal/taxonomy_manager/src/Form/MoveTermsForm.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 63 | ERROR | The array declaration extends to column 90 (the limit is 80). The array content should be split up over multiple lines
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FILE: /Users/tesboss/_PROJECTS/drupal/taxonomy_manager/src/Form/ExportTermsMiniForm.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 60 | WARNING | Unused variable $desccsv.
 78 | WARNING | Possible useless method overriding detected
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FILE: /Users/tesboss/_PROJECTS/drupal/taxonomy_manager/src/Form/ExportTermsForm.php
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FOUND 3 ERRORS AND 4 WARNINGS AFFECTING 7 LINES
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  94 | WARNING | Line exceeds 80 characters; contains 98 characters
 121 | ERROR   | Comment indentation error, expected only 1 spaces
 122 | ERROR   | Comment indentation error, expected only 8 spaces
 133 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 141 | WARNING | Possible useless method overriding detected
 170 | ERROR   | Comment indentation error, expected only 1 spaces
 182 | WARNING | Line exceeds 80 characters; contains 86 characters
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FILE: /Users/tesboss/_PROJECTS/drupal/taxonomy_manager/src/Form/TaxonomyManagerForm.php
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FOUND 3 ERRORS AND 5 WARNINGS AFFECTING 7 LINES
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  77 | ERROR   | Parameter $entity_form_builder is not described in comment
 222 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 227 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 265 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 265 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 268 | WARNING | t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
 317 | ERROR   | Public method name "TaxonomyManagerForm::taxonomy_term_submit_handler" is not in lowerCamel format
 459 | ERROR   | Doc comment is empty
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FILE: /Users/tesboss/_PROJECTS/drupal/taxonomy_manager/src/TaxonomyManagerHelper.php
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FOUND 1 ERROR AND 1 WARNING AFFECTING 2 LINES
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 155 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 259 | ERROR   | The array declaration extends to column 97 (the limit is 80). The array content should be split up over multiple lines
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Time: 827ms; Memory: 12MB

Rerolled the patch

Rerolled the patch

Re-roll patch

Re-roll patch