GROOVY-11513: include import java.time.* by default

[eric-milles]

For your consideration. Here are the types in java.time package:

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.8568%. Comparing base (6371978) to head (34dc1fe).

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2156        +/-   ##
==================================================
+ Coverage     68.8471%   68.8568%   +0.0097%     
- Complexity      29487      29489         +2     
==================================================
  Files            1421       1421                
  Lines          113264     113264                
  Branches        19584      19584                
==================================================
+ Hits            77979      77990        +11     
+ Misses          28737      28729         -8     
+ Partials         6548       6545         -3     

Files with missing lines	Coverage Δ
...va/org/codehaus/groovy/control/ResolveVisitor.java	90.0383% <100.0000%> (ø)

... and 2 files with indirect coverage changes

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