feat: possibility to set .cs_includes.php

[LeTraceurSnork]

Description

Added

• Possibility to set only ->in() directories via .cs_includes.php

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I wrote unit tests for my code (if tests is required for my changes)
• I have made changes in CHANGELOG.md file

[eldario]

@LeTraceurSnork

For what purpose do you need to add a new config file?

What about overriding these settings with arguments?

Example

$ ./vendor/bin/cs-fix  app/Client.php app/YourService/YourServiceInterface.php

Paths from configuration file have been overridden by paths provided as command arguments.
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   1) /app/Client.php (class_attributes_separation, unary_operator_spaces, not_operator_with_successor_space)
   2) /app/YourService/YourServiceInterface.php (class_attributes_separation)

Fixed 2 of 2 files in 0.090 seconds, 10.00 MB memory used

[LeTraceurSnork]

@eldario I want to use this package in WordPress environment inside a docker-image. So, if have some WordPress vendor files in root category that is absent from repo (like wp-config.php). You can't exclude them via .cs_excludes as it only excludes directories, and your example is quite unhandy - imagine I want to include 3,4,5 directories (like src, tests, wp-content/themes/my-theme, wp-content/plugins/my-plugin1 --2 --3 etc) - it is easier to do via .cs_includes rather than arguments