Fix phpcs Errors and warnings

PHPCS reported the following Errors and warnings :

FILE: /loop_workers/tests/src/Unit/FixedIntervalLoopRateTest.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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 67 | ERROR | [ ] Parameter tags must be defined first in a doc comment
 72 | ERROR | [x] Expected "int" but found "integer" for parameter type
 74 | ERROR | [x] Expected "int" but found "integer" for parameter type
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /loop_workers/tests/src/Kernel/LoopWorkerKernelTest.php
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FOUND 3 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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  72 | ERROR   | [ ] The array declaration extends to column 91 (the limit is 80). The array content should be split up over multiple lines
 122 | WARNING | [x] There must be no blank line following an inline comment
 122 | WARNING | [ ] There must be no blank line following an inline comment
 122 | ERROR   | [x] Inline comments must start with a capital letter
 122 | ERROR   | [x] Inline comments must end in full-stops, exclamation marks, question marks, colons, or closing parentheses
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PHPCBF CAN FIX THE 3 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /loop_workers/tests/src/Kernel/UltimateCronKernelTest.php
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FOUND 1 ERROR AFFECTING 1 LINE
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 41 | ERROR | The array declaration extends to column 85 (the limit is 80). The array content should be split up over multiple lines
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FILE: /loop_workers/src/Plugin/LoopRate/FixedInterval.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 78 | WARNING | [x] 'TODO: support hook_cron runner too.' should match the format '@todo Fix problem X here.'
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /LoopWorker/PartialLoopListInterface.php
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FOUND 8 ERRORS AFFECTING 8 LINES
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 15 | ERROR | [x] Line indented incorrectly; expected 2 spaces, found 3
 16 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 17 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 18 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 19 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 20 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 21 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
 22 | ERROR | [x] Expected 4 space(s) before asterisk; 3 found
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PHPCBF CAN FIX THE 8 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /loop_workers/src/Plugin/LoopWorker/LoopWorkerInterface.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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 13 | ERROR | [x] Doc comment star missing
 14 | ERROR | [x] Additional blank lines found at end of doc comment
 31 | ERROR | [ ] Description for the @return value must be on the next line
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PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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FILE: /loop_workers/src/UltimateCronJobDiscovery.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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  7 | WARNING | [x] Unused use statement
 69 | WARNING | [ ] t() calls should be avoided in classes, use \Drupal\Core\StringTranslation\StringTranslationTrait and $this->t() instead
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PHPCBF CAN FIX THE 1 MARKED SNIFF VIOLATIONS AUTOMATICALLY
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