Reimplemented findAllErrors function in Java

[PieterOlivier]

In rascal-lsp we need to call the findAllErrors function from Java.

[codecov]

Codecov Report

Attention: Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 49%. Comparing base (c523f19) to head (4c990aa).
Report is 4 commits behind head on feat/error-recovery.

Files with missing lines	Patch %	Lines
src/org/rascalmpl/library/util/ErrorRecovery.java	91%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##             feat/error-recovery   #2043   +/-   ##
=====================================================
  Coverage                     49%     49%           
- Complexity                  6561    6568    +7     
=====================================================
  Files                        685     685           
  Lines                      61077   61102   +25     
  Branches                    8830    8835    +5     
=====================================================
+ Hits                       30149   30168   +19     
- Misses                     28722   28726    +4     
- Partials                    2206    2208    +2     

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