Add GitHub action

.github/workflows/main.yml

@@ -0,0 +1,18 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v1
+    - uses: BSFishy/meson-build@v1.0.1
+      with:
+        action: test