add indicators heat in the weapon display

[kuronekochomusuke]

• add indicators heat in the weapon display
• indicator for when unit has a combat computer and the display is factoring it in
• indicators for extreme temps and the display is factoring it in
• these are factored in on the unit display to make checking heat for TSM easier

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.97%. Comparing base (1df998e) to head (654ed3f).
Report is 35 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6321      +/-   ##
============================================
- Coverage     28.97%   28.97%   -0.01%     
+ Complexity    14075    14072       -3     
============================================
  Files          2672     2672              
  Lines        269380   269390      +10     
  Branches      47954    47955       +1     
============================================
- Hits          78053    78048       -5     
- Misses       187356   187372      +16     
+ Partials       3971     3970       -1     

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