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

.gitignore

@@ -0,0 +1,31 @@
+# Environment files with secrets
+.env
+*.env.local
+
+# Server data (should not be in version control)
+serverfiles/
+steamcmd/
+backups/
+
+# Logs
+*.log
+logs/
+
+# Temporary files
+*.tmp
+*.temp
+/tmp/
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# IDE files
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# Build artifacts
+*.tar.gz
+*.zip