Use Github action matrix to check different version of Java

[Mrgove10]

V1 version for Fixes #23.

Unfortunately I get some Java error (I think it's linked to java / gradlew).
Not being an expert, I am not sure how to fix it.
I think the check file format step is failing for some reason.

[codecov-commenter]

Codecov Report

Merging #66 (62bc381) into master (cb772f8) will not change coverage.
The diff coverage is 60.00%.

❗ Current head 62bc381 differs from pull request most recent head afc13ea. Consider uploading reports for the commit afc13ea to get more accurate results

@@            Coverage Diff            @@
##             master      #66   +/-   ##
=========================================
  Coverage     41.70%   41.70%           
  Complexity      334      334           
=========================================
  Files           128      128           
  Lines          2129     2129           
  Branches        149      149           
=========================================
  Hits            888      888           
  Misses         1151     1151           
  Partials         90       90           

Flag	Coverage Δ
unittests	41.70% <60.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
.../java/jrpc/service/socket/UnixDomainSocketRpc.java	50.66% <53.84%> (ø)
src/main/java/jrpc/clightning/CLightningRPC.java	61.60% <100.00%> (ø)

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[vincenzopalazzo]

Thanks for this, I have some request.

The error should be gone after this changes

[Mrgove10]

I think i have fixed the verrification issue but the build still doesn't pass

[vincenzopalazzo]

Mh, there are no required changes, and the strategy is used in the place where it is not required.

[Mrgove10]

I have made the changes but I still can not get it to build :(

[vincenzopalazzo]

I have made the changes but I still can not get it to build :(

Well, it is not "still" failing with the same error, this is a new one, and it is related to the jdk16. You can remove also this version, and I will fix this later #67

[vincenzopalazzo]

Thanks for helping me to make the release 0.2.2.

@vincenzopalazzo review this PR.