Updates all the things

For each example, this:
- Updates to using Android Gradle Plugin 8.0
- Adds ndkVersion to build.gradle
- Updates all cargo deps and fixes / updates examples as needed
- Avoids depending on any git branches for winit/egui now that the
  required Android support is upstream.
- Removes all .idea files and adds .idea to .gitignore

Adds a na-egui example that tests NativeActivity + Egui
(same code as agdk-egui, but built against NativeActivity instead of
GameActivity)

This updates .github/workflows/ci.yml so all examples are built
and `./gradlew build` is run - not just `cargo ndk build`

Author: rib

.github/workflows/ci.yml

@@ -9,14 +9,15 @@ env:
   CARGO_INCREMENTAL: 0
   RUSTFLAGS: "-C debuginfo=0 --deny warnings"
   RUSTDOCFLAGS: -Dwarnings
-
+  CARGO_TARGET_DIR: ${{ env.GITHUB_WORKSPACE }}/shared-target
 jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         rust_version: [stable]
+        cargo_ndk_args: [-t arm64-v8a -t armeabi-v7a -t x86_64 -t x86 -o app/src/main/jniLibs/]
     steps:
       - uses: actions/checkout@v2
 
@@ -49,45 +50,85 @@ jobs:
         # a shared target to speed up builds of all examples
         run: mkdir shared-target
 
+      - name: Build na-mainloop example
+        working-directory: na-mainloop
+        run: >
+          echo "TARGET_DIR=$CARGO_TARGET_DIR"
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
       - name: Build agdk-mainloop example
         working-directory: agdk-mainloop
         run: >
-          CARGO_TARGET_DIR=$GITHUB_WORKSPACE/shared-target cargo ndk
-          -t arm64-v8a
-          -t armeabi-v7a
-          -t x86_64
-          -t x86
-          -o app/src/main/jniLibs/ -- build
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
 
-      - name: Build na-mainloop example
-        working-directory: na-mainloop
+      - name: Build na-subclass-jni
+        working-directory: na-subclass-jni
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build na-winit-wgpu
+        working-directory: na-winit-wgpu
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build na-winit-glutin
+        working-directory: na-winit-glutin
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build agdk-winit-glutin
+        working-directory: na-winit-glutin
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build agdk-cpal
+        working-directory: agdk-cpal
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build agdk-oboe
+        working-directory: agdk-oboe
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build na-egui example
+        working-directory: na-egui
         run: >
-          CARGO_TARGET_DIR=$GITHUB_WORKSPACE/shared-target cargo ndk
-          -t arm64-v8a
-          -t armeabi-v7a
-          -t x86_64
-          -t x86
-          -o app/src/main/jniLibs/ -- build
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
 
       - name: Build agdk-egui example
         working-directory: agdk-egui
         run: >
-          CARGO_TARGET_DIR=$GITHUB_WORKSPACE/shared-target cargo ndk
-          -t arm64-v8a
-          -t armeabi-v7a
-          -t x86_64
-          -t x86
-          -o app/src/main/jniLibs/ -- build
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
 
       - name: Build agdk-eframe example
         working-directory: agdk-eframe
         run: >
-          CARGO_TARGET_DIR=$GITHUB_WORKSPACE/shared-target cargo ndk
-          -t arm64-v8a
-          -t armeabi-v7a
-          -t x86_64
-          -t x86
-          -o app/src/main/jniLibs/ -- build
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build na-openxr-info example
+        working-directory: na-openxr-info
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
+      - name: Build na-openxr-wgpu
+        working-directory: na-openxr-wgpu
+        run: >
+          cargo ndk ${{ matrix.cargo_ndk_args }} build
+          ./gradlew build
+
 
   format:
     runs-on: ubuntu-latest

agdk-cpal/.gitignore

@@ -1,12 +1,7 @@
 *.iml
 .gradle
 /local.properties
-/.idea/caches
-/.idea/libraries
-/.idea/modules.xml
-/.idea/workspace.xml
-/.idea/navEditor.xml
-/.idea/assetWizardSettings.xml
+/.idea
 .DS_Store
 /build
 /captures