Dependencies prefixed with the project name: "drupal:block" and fixed Coding Standards

Hi people.

I fixed dependencies prefixed with the project name: "drupal:block" and I fixed Coding Standards for project.

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FOUND 4 ERRORS AFFECTING 4 LINES
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 14 | ERROR | [x] Namespaced classes/interfaces/traits should be
    |       |     referenced with use statements
 22 | ERROR | [x] Short array syntax must be used to define arrays
 42 | ERROR | [x] Short array syntax must be used to define arrays
 46 | ERROR | [x] Expected 1 newline at end of file; 2 found
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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 36 | WARNING | [x] A comma should follow the last multiline array
    |         |     item. Found: 'TestClass_content'
 44 | WARNING | [x] A comma should follow the last multiline array
    |         |     item. Found: 'TestClass_menu'
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