Log jvm parameters

[kuronekochomusuke]

• add jvm parameter to log at startup

13:32:06,539 INFO  [megamek.MegaMek] {main}
megamek.MegaMek.main(MegaMek.java:117) - [-Dsun.awt.disablegrab=true, -Dsun.java2d.noddraw=true, --add-opens=java.base/java.util=ALL-UNNAMED, --add-opens=java.base/java.util.concurrent=ALL-UNNAMED, -Xmx4096m, -Dfile.encoding=windows-1252, -Duser.country=US, -Duser.language=en, -Duser.variant]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.97%. Comparing base (654ed3f) to head (79123f6).
Report is 14 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #6326   +/-   ##
=========================================
  Coverage     28.97%   28.97%           
  Complexity    14072    14072           
=========================================
  Files          2672     2673    +1     
  Lines        269390   269408   +18     
  Branches      47955    47955           
=========================================
+ Hits          78048    78058   +10     
- Misses       187372   187381    +9     
+ Partials       3970     3969    -1     

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