Added .github/build-all.yml.

.github/build-all.yml

@@ -0,0 +1,19 @@
+name: Build Open1722 and all the applications
+
+on:
+  push:
+    branches: [$default-branch, ci-test]
+  pull_request:
+    branches: [$default-branch]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Install dependencies
+      run: apt update && apt install -y meson libcmocka0 libcmocka-dev lcov
+    - name: Run build_all.sh script
+      run: ./build_all.sh