Add GitHub workflow

Author: inexorabletash

.github/workflows/main.yml

@@ -0,0 +1,31 @@
+name: build
+
+on:
+  push:
+    branches: [ main ]
+    tags: ['*']
+  pull_request:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: a2stuff/build-install-ca65-action@v1
+      - uses: a2stuff/build-install-cadius-action@v1
+
+      - name: build
+        env:
+          TERM: xterm-256color
+        run: >
+          make && make package
+
+      - name: deploy new version
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: ncipollo/[email protected]
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          artifacts: "out/intbasic.system.po,out/intbasic.system.2mg"