Add TempDir cleanup switch

[leonard84]

[codecov[bot]]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (2c7db77) 80.44% compared to head (fb18800) 80.71%. Report is 11 commits behind head on master.

Files	Patch %	Lines
.../runtime/extension/builtin/TempDirInterceptor.java	90.62%	1 Missing and 2 partials :warning:
...java/org/spockframework/builder/BuilderHelper.java	50.00%	1 Missing and 1 partial :warning:
...rk/runtime/extension/builtin/TempDirExtension.java	91.30%	1 Missing and 1 partial :warning:
...a/org/spockframework/runtime/model/MethodKind.java	0.00%	1 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1525      +/-   ##
============================================
+ Coverage     80.44%   80.71%   +0.26%     
- Complexity     4337     4371      +34     
============================================
  Files           441      442       +1     
  Lines         13534    13729     +195     
  Branches       1707     1724      +17     
============================================
+ Hits          10888    11081     +193     
- Misses         2008     2009       +1     
- Partials        638      639       +1     

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[leonard84]

Moved back to draft, as this way it should be implemented makes state sharing hard, and it would be solved if we can add a store similar to Spock. https://github.com/junit-team/junit5/issues/3047