Add GiveAirshotAward virtual property to DeathmatchWeapon and add it for RailGun and RocketLauncher
Fixed all pickups running code client-side that should be server-side only
Add Award class and all basic award types (some don't have the announcer sound yet)
Add test GiveAwardCmd (admin-only) and first player death tracker for First Blood
Add ConsecutiveKills and SpreeKills, as well as track domination kills and give all awards accordingly
Add basic award UI to be styled later
Merge branch 'main' of sbox-boomer