Added ci for building the android app

.github/workflows/android_build.yml

@@ -0,0 +1,51 @@
+name: Android build
+
+on:
+  workflow_dispatch:
+  push:
+    branches: ["android"]
+  pull_request:
+    branches: ["android"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+        with:
+          submodules: "recursive"
+          fetch-depth: 0
+
+      - name: Fetch full history for vcpkg submodule
+        run: |
+          cd dependencies/vcpkg
+          git fetch --unshallow
+          git pull --all
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: "17"
+          distribution: "temurin"
+
+      - name: Build Cemu for Android
+        env:
+          ANDROID_STORE_FILE_BASE64: ${{ secrets.ANDROID_STORE_FILE_BASE64 }}
+          ANDROID_KEY_STORE_PASSWORD: ${{ secrets.ANDROID_KEY_STORE_PASSWORD }}
+          ANDROID_KEY_ALIAS: ${{ secrets.ANDROID_KEY_ALIAS }}
+        run: |
+          cd ./src/android
+          base64 --decode <<< "${ANDROID_STORE_FILE_BASE64}" > store.jks
+          ANDROID_STORE_FILE=$(pwd)/store.jks
+          echo -e "keyStorePassword=$ANDROID_KEY_STORE_PASSWORD\nkeyAlias=$ANDROID_KEY_ALIAS\nstoreFile=$ANDROID_STORE_FILE\n" > keystore.properties
+          ./gradlew assembleRelease
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: cemu-android
+          path: |
+            ./src/android/app/build/outputs/apk/release/*.apk
+            ./src/android/app/build/outputs/apk/release/*.aab

src/android/app/build.gradle

@@ -1,6 +1,11 @@
 plugins {
     id 'com.android.application'
 }
+def keystorePropertiesFile = rootProject.file("keystore.properties")
+def keystoreProperties = new Properties()
+if (keystorePropertiesFile.exists()) {
+    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
+}
 
 android {
     namespace 'info.cemu.Cemu'
@@ -18,12 +23,26 @@ android {
         }
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
-
+    var releaseStoreFile = keystoreProperties['storeFile'];
+    signingConfigs {
+        if (releaseStoreFile != null) {
+            release {
+                keyAlias keystoreProperties['keyAlias']
+                keyPassword keystoreProperties['keyStorePassword']
+                storeFile file(releaseStoreFile)
+                storePassword keystoreProperties['keyStorePassword']
+            }
+        }
+    }
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-            signingConfig signingConfigs.debug
+            if (releaseStoreFile != null) {
+                signingConfig signingConfigs.release
+            } else {
+                signingConfig signingConfigs.debug
+            }
         }
         debug {
             applicationIdSuffix ".debug"