destroy missiles leaving the map

fixes #5582
StyleCop
allow to lay single mines similiar to the original

closes #5467
Add /crash dev command

Throws an exception and crashes the game. Useful to test the
shutdown sequence.
add a new Lint check for map players
StyleCop
fix remaining errors spotted by new player lint check
Merge pull request #5697 from Mailaender/classic-minelay

Added a classic minelay order
Merge pull request #5701 from pavlos256/dev-crash

Add /crash dev command
Merge pull request #5687 from Mailaender/missile-out-of-map

Added a check for IsInMap(cell) to missiles.
Light Unit Support for D2K.
Merge pull request #5732 from MustaphaTR/bleed

Closes #5726
Heavy Support + Ordos Raider for light
Update AUTHORS
Merge pull request #5733 from MustaphaTR/bleed

Heavy Support + Ordos Raider for light
Merge pull request #5706 from Mailaender/lint-players

Added a new OpenRA.Lint check for invalid player definitions
separate content install from loadscreen
unify install from CD logic
unify music install and add a download option

closes #4759
fix Tiberian Dawn CD rip logic

closes #4424