Implement proper asset management with capacitor-assets

- Add capacitor-assets.config.json for cross-platform asset generation
- Create resources/ directory structure for source assets
- Update .gitignore to exclude generated Android assets and resources
- Remove 30+ generated files from source control
- Add comprehensive asset management documentation
- Verify asset generation works with new configuration

Assets are now properly managed: source files in version control,
generated files excluded, and build process handles platform-specific
asset generation automatically.

capacitor-assets.config.json

@@ -0,0 +1,36 @@
+{
+  "icon": {
+    "ios": {
+      "source": "resources/ios/icon/icon.png",
+      "target": "ios/App/App/Assets.xcassets/AppIcon.appiconset"
+    },
+    "android": {
+      "source": "resources/android/icon/icon.png",
+      "target": "android/app/src/main/res"
+    },
+    "web": {
+      "source": "resources/web/icon/icon.png",
+      "target": "public/img/icons"
+    }
+  },
+  "splash": {
+    "ios": {
+      "source": "resources/ios/splash/splash.png",
+      "target": "ios/App/App/Assets.xcassets/Splash.imageset"
+    },
+    "android": {
+      "source": "resources/android/splash/splash.png",
+      "target": "android/app/src/main/res"
+    }
+  },
+  "splashDark": {
+    "ios": {
+      "source": "resources/ios/splash/splash_dark.png",
+      "target": "ios/App/App/Assets.xcassets/SplashDark.imageset"
+    },
+    "android": {
+      "source": "resources/android/splash/splash_dark.png",
+      "target": "android/app/src/main/res"
+    }
+  }
+}