Initial PropHunt server setup

- Complete bare metal installer with SteamCMD, MetaMod, SourceMod, ULX
- Docker installer with one-liner support
- Server configuration files (server.cfg, autoexec.cfg, mount.cfg)
- Update script for easy maintenance
- Backup script for server data
- Workshop collection documentation
- SourceMod admin configuration template

cfg/mapcycle.txt

@@ -0,0 +1,32 @@
+// PropHunt Map Cycle
+// Add your PropHunt maps here
+
+// Default GMod maps (some work for PropHunt)
+gm_construct
+gm_flatgrass
+
+// Classic PropHunt Maps (require workshop downloads)
+// ph_office
+// ph_restaurant
+// ph_restaurant_v2
+// ph_hotel
+// ph_motel
+// ph_house
+// ph_mansion
+// ph_apartment
+// ph_warehouse
+// ph_school
+// ph_westwood
+// ph_skyscraper
+// ph_docks
+// ph_library
+// ph_bank
+// ph_gas_station
+// ph_pizzeria
+// ph_cruise
+// ph_luigis_mansion
+// ph_minecraft_b4
+// ph_starship
+// ph_nightclub
+// ph_bowling
+// ph_watchtower