feat: Add scripts and systemd services for SteamOS session management and game launching

ansible/files/game_station/bin/user/launch_rpcs3.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -euo pipefail
+LOGFILE="$HOME/.local/logs/rpcs3.log"
+
+log() { echo "[$(date --iso-8601=seconds)] $*" | tee -a "$LOGFILE"; }
+
+RPCS_BIN="$(command -v rpcs3 || true)"
+if [ -z "$RPCS_BIN" ]; then
+  log "ERROR: rpcs3 not found in PATH"
+  exit 127
+fi
+
+log "Launching RPCS3: $RPCS_BIN \"${@}\""
+"$RPCS_BIN" --no-gui --fullscreen "${@}" >>"$LOGFILE"
+