Added a movement controller, and added a demo scene

Packages/manifest.json

@@ -4,6 +4,7 @@
     "com.unity.feature.2d": "1.0.0",
     "com.unity.ide.rider": "3.0.18",
     "com.unity.ide.visualstudio": "2.0.17",
+    "com.unity.inputsystem": "1.4.4",
     "com.unity.test-framework": "1.1.33",
     "com.unity.textmeshpro": "3.0.6",
     "com.unity.timeline": "1.7.2",

Packages/packages-lock.json

@@ -147,6 +147,15 @@
       },
       "url": "https://packages.unity.com"
     },
+    "com.unity.inputsystem": {
+      "version": "1.4.4",
+      "depth": 0,
+      "source": "registry",
+      "dependencies": {
+        "com.unity.modules.uielements": "1.0.0"
+      },
+      "url": "https://packages.unity.com"
+    },
     "com.unity.mathematics": {
       "version": "1.2.6",
       "depth": 2,