add GH workflow

Author: mikpe

.github/workflows/test.yml

@@ -0,0 +1,22 @@
+name: Erlang CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest]
+        otp-version: [25, 26, 27]
+    runs-on: ${{ matrix.platform }}
+    container:
+      image: erlang:${{ matrix.otp-version }}
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Compile and Test
+      run: make all