Fix the issue reported by phpcs

Problem/Motivation

There are following errors and warnings which are reported by PHP code sniffer within the module :

FILE: D:\xampp\htdocs\know-how\modules\custom\node_by_term\node_by_term.info.yml
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 7 | WARNING | All dependencies must be prefixed with the project name, for example "drupal:"
 8 | WARNING | All dependencies must be prefixed with the project name, for example "drupal:"
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FILE: D:\xampp\htdocs\know-how\modules\custom\node_by_term\node_by_term.routing.yml
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 16 | WARNING | Open page callback found, please add a comment before the line why there is no access restriction
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FILE: D:\xampp\htdocs\know-how\modules\custom\node_by_term\src\Controller\NodeListController.php
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FOUND 0 ERRORS AND 14 WARNINGS AFFECTING 14 LINES
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  25 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  26 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  27 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  28 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  34 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  41 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  55 | WARNING | Node::loadMultiple calls should be avoided in classes, use dependency injection instead
  58 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  74 | WARNING | Node::loadMultiple calls should be avoided in classes, use dependency injection instead
  77 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
  91 | WARNING | Node::loadMultiple calls should be avoided in classes, use dependency injection instead
  95 | WARNING | There must be no blank line following an inline comment
 112 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 113 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
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FILE: D:\xampp\htdocs\know-how\modules\custom\node_by_term\src\Form\NodeByTermForm.php
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FOUND 0 ERRORS AND 8 WARNINGS AFFECTING 8 LINES
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 26 | WARNING | There must be no blank line following an inline comment
 28 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 29 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 30 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 33 | WARNING | Vocabulary::loadMultiple calls should be avoided in classes, use dependency injection instead
 58 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 68 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
 91 | WARNING | \Drupal calls should be avoided in classes, use dependency injection instead
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Steps to reproduce

1) Install and enable this module .

2) Run following command using git in the correct directory :

phpcs --standard=DrupalPractice --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md,yml node_by_term/

Proposed resolution

Above error/warnings need to be fixed as per the coding standard.