chore: Remove composer.lock and add to .gitignore

[OskarStark]

Library packages should not commit composer.lock to allow consumers to resolve dependencies according to their needs.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.92%. Comparing base (e1641e9) to head (a539b13).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master      #87   +/-   ##
=========================================
  Coverage     93.92%   93.92%           
  Complexity      493      493           
=========================================
  Files            79       79           
  Lines          1630     1630           
=========================================
  Hits           1531     1531           
  Misses           99       99           

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[silasjoisten]

That was not such a good idea. the composer.lock was excluded from the page see .gitattributes now i have different package versions then the CI which makes it hard to debug.

[silasjoisten]

@OskarStark please revert