feat: Enhance game station setup and configuration

- Updated README with detailed instructions for creating a dedicated Ansible user on Linux, including SSH key setup and passwordless sudo.
- Added userConfigurations.json for Steam ROM Manager with configurations for various gaming consoles.
- Introduced scripts for managing Gamescope and Steam sessions, including launch scripts for various emulators (Genesis, PSP, RPCS3, SNES).
- Created systemd service for Gamescope session management.
- Developed Ansible playbook for configuring Fedora for optimized Sunshine and Gamescope streaming, including user setup and system configurations.
- Updated Prometheus configuration to reflect changes in exporter targets.
- Commented out the Devolo exporter module in Terraform configuration for future reference.

ansible/files/game_station/system/launch_gamescope.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+set -euo pipefail
+LOGFILE="$HOME/.local/logs/gamescope.log"
+
+log() { echo "[$(date --iso-8601=seconds)] $*" | tee -a "$LOGFILE"; }
+
+log "Starting Gamescope session..."
+CONF_FILE="$HOME/.config/gamescope/gamescope.conf"
+[ -f "$CONF_FILE" ] && source "$CONF_FILE"
+
+OUTPUT_CONNECTOR=${OUTPUT_CONNECTOR:-HDMI-A-1}
+FRAMERATE=${FRAMERATE:-60}
+RESOLUTION=${RESOLUTION:-1920x1080}
+WIDTH="${RESOLUTION%x*}"
+HEIGHT="${RESOLUTION#*x}"
+
+export __GL_GSYNC_ALLOWED=1
+export __GL_VRR_ALLOWED=1
+# export __GL_THREADED_OPTIMIZATIONS=1
+export __GL_SHADER_DISK_CACHE=1
+export __GL_SYNC_TO_VBLANK=0
+
+GAMESCOPE_BIN="$(command -v gamescope || true)"
+if [ -z "$GAMESCOPE_BIN" ]; then
+  log "ERROR: gamescope not found in PATH"
+  exit 127
+fi
+
+HDR_FLAG=""
+if [[ "$HDR_ENABLED" == "1" || "$HDR_ENABLED" == "true" || "$HDR_ENABLED" == "yes" ]]; then
+    HDR_FLAG="--hdr-enabled"
+    log "HDR flag added: --hdr-enabled"
+else
+    log "HDR disabled, no HDR flag added"
+fi
+
+GAMESCOPE_ARGS="--generate-drm-mode fixed --fade-out-duration 200 --cursor-scale-height 720 -f -w $WIDTH -h $HEIGHT --rt --mangoapp -e -O \"$OUTPUT_CONNECTOR\" -r $FRAMERATE $HDR_FLAG"
+log "Launching Gamescope: $GAMESCOPE_BIN $GAMESCOPE_ARGS -- /usr/local/bin/launch_steam.sh"
+exec "$GAMESCOPE_BIN" ${GAMESCOPE_ARGS} -- /usr/local/bin/launch_steam.sh >>"$LOGFILE" 2>&1