Add agdk-winit-wgpu-egui example

This is a example of a Winit + WGPU based application that then uses Egui
to render an overlay UI.

This builds on top of agdk-winit-wgpu but needed to downgrade to wgpu
0.27 to be compatible with egui-wgpu 0.33

Author: rib

agdk-winit-wgpu-egui/.gitignore

@@ -0,0 +1,16 @@
+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
+*.so
+
+
+# Added by cargo
+
+/target

agdk-winit-wgpu-egui/.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "rust-analyzer.cargo.target": "aarch64-linux-android",
+    "editor.formatOnSave": true,
+    "[xml]": {
+        "editor.formatOnSave": false
+    }
+}