ci: add build workflow

.github/workflows/build.yml

@@ -0,0 +1,46 @@
+name: Build application executables
+
+on:
+    push:
+        branches: ['master']
+    pull_request:
+        branches: ['master']
+    workflow_dispatch:
+
+permissions:
+    contents: read
+    packages: write
+
+jobs:
+    build:
+        strategy:
+            matrix:
+                os: [ubuntu-latest, windows-latest]
+        runs-on: ${{ matrix.os }}
+        steps:
+            - uses: actions/checkout@v3
+            - name: Set up Python 3.10
+              id: cp310
+              uses: actions/setup-python@v3
+              with:
+                  python-version: '3.10'
+            - name: Install dependencies
+              run: |
+                  python -m pip install --upgrade pip
+                  pip install pyinstaller opencv-python-headless opencv-contrib-python
+                  pip install -r requirements.txt
+            - name: Make
+              run: make
+            - name: Install libgl1
+              if: matrix.os == 'ubuntu-latest'
+              run: sudo apt-get install libgl1 libegl1
+            - name: Run PyInstaller (windows)
+              if: matrix.os == 'windows-latest'
+              run: pyinstaller -n "OnAirScreen" -F --noconsole -i "images/oas_icon.ico" start.py
+            - name: Run PyInstaller (ubuntu)
+              if: matrix.os == 'ubuntu-latest'
+              run: pyinstaller -n "OnAirScreen" -F --noconsole start.py
+            - uses: actions/upload-artifact@v3
+              with:
+                  name: ${{ matrix.os }}
+                  path: dist/*