add GE Proton 9-22

compat/tools/GE-Proton9-22/compatibilitytool.vdf

@@ -0,0 +1,23 @@
+"compatibilitytools"
+{
+  "compat_tools"
+  {
+    "GE-Proton9-22" // Internal name of this tool
+    {
+      // Can register this tool with Steam in two ways:
+      //
+      // - The tool can be placed as a subdirectory in compatibilitytools.d, in which case this
+      //   should be '.'
+      //
+      // - This manifest can be placed directly in compatibilitytools.d, in which case this should
+      //   be the relative or absolute path to the tool's dist directory.
+      "install_path" "."
+
+      // For this template, we're going to substitute the display_name key in here, e.g.:
+      "display_name" "GE-Proton9-22"
+
+      "from_oslist"  "windows"
+      "to_oslist"    "linux"
+    }
+  }
+}

compat/tools/GE-Proton9-22/stub.info

@@ -0,0 +1,3 @@
+TOOL_URL=https://github.com/GloriousEggroll/proton-ge-custom/releases/download/GE-Proton9-22/GE-Proton9-22.tar.gz
+TOOL_MD5SUM=3fa2b2bcce0cbfd51765f547af736340
+TOOL_CMD=proton

compat/tools/GE-Proton9-22/toolmanifest.vdf

@@ -0,0 +1,8 @@
+"manifest"
+{
+  "version" "2"
+  "commandline" "/proton %verb%"
+  "require_tool_appid" "1628350"
+  "use_sessions" "1"
+  "compatmanager_layer_name" "proton"
+}