Add VTOL/WiGE exemption for AAA and LAA missiles

[Sleet01]

Per errata here: https://bg.battletech.com/forums/index.php?topic=87401.msg2060972#msg2060972
Remove +4 for attacking targets on the ground when targeting VTOL / WiGE ground units.

Notes:
While this does have the effect of making VTOL and WiGE units slightly more enticing for ASF on the ground map, it does not make them any better targets for AAA or LAA missile attacks than other ground units... except in cases where a VTOL has only moved a handful of hexes:

Before:
3 Gunnery + 2 (Ground Strike) + 4 (AAA vs Ground Target) + TMM (usually +3 ~ +4) + 1 (Flying VTOL) ~= TN of 13 - 14

After:
3 Gunnery + 2 (Ground Strike) + TMM (usually +3 ~ +4) + 1 (Flying VTOL) ~= TN of 9 - 10

Compare to attacking a slow-moving Mek target:
3 Gunnery + 2 (Ground Strike) + 4 (AAA vs Ground Target) + TMM (usually +1 ~ +2) ~= TN of 10 - 11

So most VTOL will be marginally better targets than slow ground units, but not at all sitting ducks.

Notably, VTOLs are slightly better platforms for AAA / LAA missiles against ASFs than the reverse:
4 Gunner + 0 ~ 2 (target side) + AMM (usually +1 ~ +2) + range (usually +2 for medium) ~= TN of 7 ~ 10

Testing:

• Ran several Bot v Bot tests.
• Ran all 3 projects' unit tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.13%. Comparing base (5407b8b) to head (8defb46).
Report is 43 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6611      +/-   ##
============================================
- Coverage     29.13%   29.13%   -0.01%     
- Complexity    15366    15374       +8     
============================================
  Files          2863     2863              
  Lines        279868   279948      +80     
  Branches      49291    49285       -6     
============================================
- Hits          81553    81550       -3     
- Misses       192855   192945      +90     
+ Partials       5460     5453       -7     

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