feat: detect key in background

Packages/manifest.json

@@ -1,8 +1,8 @@
 {
   "dependencies": {
+    "com.sator-imaging.app-window-utility": "https://github.com/sator-imaging/AppWindowUtility.git",
     "com.unity.2d.sprite": "1.0.0",
     "com.unity.ide.rider": "3.0.28",
-    "com.unity.inputsystem": "1.7.0",
     "com.unity.textmeshpro": "3.0.8",
     "com.unity.ugui": "1.0.0",
     "com.unity.modules.ai": "1.0.0",

Packages/packages-lock.json

@@ -1,5 +1,12 @@
 {
   "dependencies": {
+    "com.sator-imaging.app-window-utility": {
+      "version": "https://github.com/sator-imaging/AppWindowUtility.git",
+      "depth": 0,
+      "source": "git",
+      "dependencies": {},
+      "hash": "92110b8c9515c3ec9056c924c113e1721b9a5bbc"
+    },
     "com.unity.2d.sprite": {
       "version": "1.0.0",
       "depth": 0,
@@ -22,15 +29,6 @@
       },
       "url": "https://packages.unity.com"
     },
-    "com.unity.inputsystem": {
-      "version": "1.7.0",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {
-        "com.unity.modules.uielements": "1.0.0"
-      },
-      "url": "https://packages.unity.com"
-    },
     "com.unity.textmeshpro": {
       "version": "3.0.8",
       "depth": 0,