ci: Add Github Actions workflow for coverity build

.github/workflows/coverity.yml

@@ -0,0 +1,31 @@
+name: Coverity
+
+on:
+  push:
+    branches: [coverity_scan]
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build:
+    name: Coverity Scan
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Install dependencies
+      run: |
+           sudo apt-get update
+           sudo apt-get install qttools5-dev libqt5scintilla2-dev libqcustomplot-dev libsqlite3-dev libqt5svg5 libsqlcipher-dev qt5-default
+    - name: Configure cmake
+      run: |
+           cmake -DCMAKE_INSTALL_PREFIX:PATH=/usr -DENABLE_TESTING=ON -Dsqlcipher=1 .
+    - name: Build and scan
+      uses: vapier/coverity-scan-action@v0
+      with:
+        project: sqlitebrowser%2Fsqlitebrowser
+        token: ${{ secrets.COVERITY_TOKEN }}
+        email: 'github@mkleusberg.de'
+        command: make