Add steam games directory sync

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/common/user/configs/gui/gaming/scripts/steam-ln.sh

@@ -0,0 +1,57 @@
+STEAM="${HOME}/.local/share/Steam/steamapps/common"
+GAMES="${HOME}/Games"
+
+EXCLUDE=(
+  "Proton - Experimental"
+  "SteamLinuxRuntime_sniper"
+  "Steamworks Shared"
+  "Steam.dll"
+)
+
+is_excluded() {
+  local dir=$1
+  for exclude in "${EXCLUDE[@]}"; do
+    if [[ "${dir}" == "${exclude}" ]]; then
+      return 0
+    fi
+  done
+  return 1
+}
+
+for game in "${STEAM}"/*/; do
+  name=$(basename "${game}")
+
+  if is_excluded "${name}"; then
+    echo "Excluding ${name} from symlink creation."
+    continue
+  fi
+
+  if [[ -L "${GAMES}/${name}" ]]; then
+    continue
+  fi
+
+  if [[ -d "${GAMES}/${name}" || -f "${GAMES}/${name}" ]]; then
+    >&2 echo "Error: ${name} is already a regular directory or file."
+    continue
+  fi
+
+  echo "Creating symlink for ${name}..."
+  ln -s "${game}" "${GAMES}/${name}"
+done
+
+for link in "${GAMES}"/*; do
+  target=$(readlink "${link}")
+
+  if [[ ! "${target}" == "${STEAM}/"* ]]; then
+    continue
+  fi
+
+  name=$(basename "${target}")
+
+  if [[ -e "${target}" ]] && ! is_excluded "${name}"; then
+    continue
+  fi
+
+  echo "Removing symlink ${link}..."
+  rm "${link}"
+done