add workflow file for generating the "net" release apk

.github/workflows/release-net.yml

@@ -0,0 +1,97 @@
+name: Create keepass2android release
+
+on:
+  release:
+    types: [published]  # Trigger when a new GitHub release is published
+  workflow_dispatch: # For manual testing
+
+jobs:
+
+  build-release:
+
+    runs-on: windows-2022
+
+
+
+    steps:
+    
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v3
+
+    - name: Cache NuGet packages
+      uses: actions/cache@v4
+      with:
+        path: ~/.nuget/packages
+        key: ${{ runner.os }}-nuget-${{ hashFiles('src/**/*.csproj', 'src/**/packages.config') }}
+        restore-keys: |
+          ${{ runner.os }}-nuget-
+
+    # Workaround an issue when building on windows-2022. Error was
+    #       D8 : OpenJDK 64-Bit Server VM warning : INFO: os::commit_memory(0x00000000ae400000, 330301440, 0) failed; error='The paging file is too small for this operation to complete' (DOS error/errno=1455) [D:\a\keepass2android\keepass2android\src\keepass2android\keepass2android-app.csproj]
+    #       C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Xamarin\Android\Xamarin.Android.D8.targets(81,5): error MSB6006: "java.exe" exited with code 1. [D:\a\keepass2android\keepass2android\src\keepass2android\keepass2android-app.csproj]
+    - name: Configure Pagefile
+      uses: al-cheb/configure-pagefile-action@a3b6ebd6b634da88790d9c58d4b37a7f4a7b8708 # v1.4
+      with:
+        minimum-size: 8GB
+
+    - name: Add msbuild to PATH
+      uses: microsoft/setup-msbuild@v2
+      # If we want to also have nmake, use this instead
+      #uses: ilammy/msvc-dev-cmd@v1
+
+    - name: Switch to JDK-17
+      uses: actions/setup-java@v4
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+
+    - name: Display java version
+      run: java -version
+
+    # Some components of Keepass2Android currently target android API 26 which are not available on the runner
+    - name: Download android-26 API
+      shell: cmd
+      run: |
+        %ANDROID_SDK_ROOT%\cmdline-tools\latest\bin\sdkmanager --install "platforms;android-26"
+
+    - name: Build native dependencies
+      shell: cmd
+      run: |
+        make native
+
+    - name: Build java dependencies
+      shell: cmd
+      run: |
+        make java
+
+    - name: Install NuGet dependencies (net)
+      run: make nuget Flavor=Net
+
+    - name: Use the _net manifest
+      run: |
+        make manifestlink Flavor=Net
+
+
+    - name: Extract key store
+      run: |
+        echo ${{ secrets.KEYSTORE_BASE64 }} | base64 --decode > kp2a_net.keystore
+
+
+    - name: Build APK (net)
+      env:
+        KeyStore: kp2a_net.keystore
+        MyAndroidSigningStorePass: ${{ secrets.KEY_STORE_PASSWORD }}
+        MyAndroidSigningKeyPass: ${{ secrets.KEY_PASSWORD }}
+      run: |
+        make apk Flavor=Net
+
+    - name: Archive production artifacts (net)
+      uses: actions/upload-artifact@v4
+      with:
+        name: signed APK ('net' built on ${{ github.job }})
+        path: |
+          src/keepass2android-app/bin/*/*-Signed.apk