add CI (#9)

.github/workflows/rust.yml

@@ -0,0 +1,28 @@
+name: Build and Test Nova
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install
+      run: rustup default nightly
+    - name: Install rustfmt Components
+      run: rustup component add rustfmt
+    - name: Install clippy
+      run: rustup component add clippy
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose
+    - name: Check Rustfmt Code Style
+      run: cargo fmt --all -- --check
+    - name: Check clippy warnings
+      run: cargo clippy --all-targets --all-features -- -D warnings
+