Add GitHub Actions CI

.github/workflows/rust.yml

@@ -0,0 +1,42 @@
+name: Rust
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+defaults:
+  run:
+    shell: bash
+    working-directory: typstc
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        path: typstc
+    - name: Checkout tide
+      uses: actions/checkout@v2
+      with:
+        repository: typst/toddle
+        token: ${{ secrets.TYPSTC_ACTION_TOKEN }} # `GitHub_PAT` is a secret that contains your PAT
+        path: toddle
+    - name: Checkout toddle
+      uses: actions/checkout@v2
+      with:
+        repository: typst/toddle
+        token: ${{ secrets.TYPSTC_ACTION_TOKEN }} # `GitHub_PAT` is a secret that contains your PAT
+        path: tide
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose