Add a PHP coding style checker/fixer command

[mlocati]

Referring to concretecms/concretecms#9852 (comment): what about moving the c5:phpcs CLI command (and all the related code) from the core to this project?

[KorvinSzanto]

Is this command something that people would use outside of core development?

[aembler]

I would expect this to be valuable for anyone developing Concrete code, whether it's for the core or for their own custom site/package

[mlocati]

Yep, it's for developers only.
Having a coding style checker/fixer in the core or in this CLI tool would both work for me, but I'd prefer this CLI tool because:

• it can be updated more frequently than the core
• we don't have in the core some code that's only used by a 0.1% of users

[KorvinSzanto]

Fair enough, makes sense to me as long as it's useful outside of core development 👍