Add a workflows file

Author: postsolar

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: "lts/*"
+
+      - name: Setup PureScript dependencies
+        run: npm i --global [email protected] spago@next purs-tidy
+
+      - name: Chech formatting
+        run: purs-tidy check src/
+
+      - name: Build source
+        run: |
+          spago build
+          spago bundle --bundle-type module --bundler-args '--external:gi://*'
+
+      - name: Cache PureScript dependencies
+        uses: actions/cache@v2
+        with:
+          key: ${{ runner.os }}-spago-${{ hashFiles('**/spago.yaml') }}
+          path: |
+            .spago
+            output
+