Add build workflows for Biometric and DirectBoot samples

.github/workflows/BiometricAuthentication_Build.yml

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+name: BiometricAuthentication Build
+
+on:
+  push:
+    branches: [ '*' ]
+    paths:
+      - 'BiometricAuthentication/**'
+  pull_request:
+    branches: [ '*' ]
+    paths:
+      - 'BiometricAuthentication/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    defaults:
+      run:
+        working-directory: BiometricAuthentication
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.PAT || github.token }}
+
+    - name: Set up Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '11'
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v4
+
+    - name: Make gradlew executable
+      run: chmod +x ./gradlew
+
+    - name: Build All
+      run: ./gradlew build --stacktrace

.github/workflows/BiometricLoginKotlin_Build.yml

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+name: BiometricLoginKotlin Build
+
+on:
+  push:
+    branches: [ '*' ]
+    paths:
+      - 'BiometricLoginKotlin/**'
+  pull_request:
+    branches: [ '*' ]
+    paths:
+      - 'BiometricLoginKotlin/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    defaults:
+      run:
+        working-directory: BiometricLoginKotlin
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.PAT || github.token }}
+
+    - name: Set up Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '11'
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v4
+
+    - name: Make gradlew executable
+      run: chmod +x ./gradlew
+
+    - name: Build All
+      run: ./gradlew build --stacktrace
+

.github/workflows/DirectBoot_Build.yml

@@ -0,0 +1,58 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+name: DirectBoot Build
+
+on:
+  push:
+    branches: [ '*' ]
+    paths:
+      - 'DirectBoot/**'
+  pull_request:
+    branches: [ '*' ]
+    paths:
+      - 'DirectBoot/**'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+
+    defaults:
+      run:
+        working-directory: DirectBoot
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        token: ${{ secrets.PAT || github.token }}
+
+    - name: Set up Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'zulu'
+        java-version: '11'
+
+    - name: Setup Gradle
+      uses: gradle/actions/setup-gradle@v4
+
+    - name: Make gradlew executable
+      run: chmod +x ./gradlew
+
+    - name: Build All
+      run: ./gradlew build --stacktrace