Fix the issues reported by phpcs

$ vendor/bin/phpcs -s $_WEB_ROOT/modules/custom --report-junit=junit.xml --report-full --report-summary --report-source $_PHPCS_EXTRA
FILE: ...builds/project/ecoindex/web/modules/custom/ecoindex/src/EcoIndexHelper.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 12 | ERROR | [x] Doc comment star missing
    |       |     (Drupal.Commenting.DocCommentStar.StarMissing)
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: ...stom/ecoindex/src/Plugin/Validation/Constraint/EcoIndexFieldConstraint.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 17 | ERROR | Missing member variable doc comment
    |       | (Drupal.Commenting.VariableComment.Missing)
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FILE: /builds/project/ecoindex/web/modules/custom/ecoindex/ecoindex.module
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FOUND 2 ERRORS AND 1 WARNING AFFECTING 3 LINES
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  1 | ERROR   | [x] Missing file doc comment
    |         |     (Drupal.Commenting.FileComment.Missing)
  4 | ERROR   | [x] Use statements should be sorted alphabetically. The first
    |         |     wrong one is
    |         |     Drupal\Core\Field\FieldTypeCategoryManagerInterface.
    |         |     (SlevomatCodingStandard.Namespaces.AlphabeticallySortedUses.IncorrectlyOrderedUses)
 96 | WARNING | [ ] Line exceeds 80 characters; contains 82 characters
    |         |     (Drupal.Files.LineLength.TooLong)
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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Time: 148ms; Memory: 6MB
PHP CODE SNIFFER REPORT SUMMARY
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FILE                                                            ERRORS  WARNINGS
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...roject/ecoindex/web/modules/custom/ecoindex/ecoindex.module  2       1
...ecoindex/web/modules/custom/ecoindex/src/EcoIndexHelper.php  1       0
...rc/Plugin/Validation/Constraint/EcoIndexFieldConstraint.php  1       0
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A TOTAL OF 4 ERRORS AND 1 WARNING WERE FOUND IN 10 FILES
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PHPCBF CAN FIX 3 OF THESE SNIFF VIOLATIONS AUTOMATICALLY
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PHP CODE SNIFFER VIOLATION SOURCE SUMMARY
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    SOURCE                                                                 COUNT
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[x] Drupal.Commenting.DocCommentStar.StarMissing                           1
[x] Drupal.Commenting.FileComment.Missing                                  1
[ ] Drupal.Commenting.VariableComment.Missing                              1
[ ] Drupal.Files.LineLength.TooLong                                        1
[x] SlevomatCodingStandard.Namespaces.AlphabeticallySortedUses.Incorrectl  1
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A TOTAL OF 5 SNIFF VIOLATIONS WERE FOUND IN 5 SOURCES
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PHPCBF CAN FIX THE 3 MARKED SOURCES AUTOMATICALLY (3 VIOLATIONS IN TOTAL)
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