add maven wrapper

[isopov]

Currently maven wrapper is official part of the maven project - https://maven.apache.org/tools/wrapper/index.html - and not some third party tool as it was several years ago. Usability improvements should be great - no need to install is locally. How about adding it to the repo?

AFAIU there are many maven-based java repos in this project, same logic applies to all other as well, but lets use this PR as a place to discuss adding maven wrapper to all of them.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.30%. Comparing base (557f1e0) to head (82702a9).

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #520   +/-   ##
=========================================
  Coverage     61.29%   61.30%           
- Complexity     2306     2307    +1     
=========================================
  Files           328      328           
  Lines         13468    13468           
  Branches       1344     1344           
=========================================
+ Hits           8255     8256    +1     
+ Misses         4578     4577    -1     
  Partials        635      635           

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