Move most palette-related stuff + nuke effect + Immobile trait to Mods.Common
Add country definitions
Set up custom prerequisites for FACT
Fix Parachutable to work for tank drops
Set up tank drop for Russia, parabombs for Ukraine and spy plane/paradrop for Soviet
Update crates for new countries
Update voice definitions for new countries
Set passenger facings automatically when they are unloading
Adjust fake structure tooltips to appear real to enemies
Rebalance fake structures
Let vanilla Allies build fake structures (except fake sub pen because it's silly)
Change spy to be 50% cheaper for England
Add Advanced Chronosphere for Germany
Set up prerequisites for WEAP
stnk -> England, ctnk -> Germany, qtnk -> Russia, dtrk -> Ukraine