[FEATURE] Add PHP compatibility sniffer

[Starkmann]

Resolves: #447

[coveralls]

Pull Request Test Coverage Report for Build 10167564771

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
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• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 10148857135:	0.0%
Covered Lines:	46
Relevant Lines:	46

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💛 - Coveralls

[oliverklee]

We have failed to get this to work and have decided that this tool isn't worth the hassle at the moment. Closing.