github: initial check workflow

Signed-off-by: ATechnoHazard <amolele@gmail.com>

.github/workflows/check.yml

@@ -0,0 +1,56 @@
+on:
+  push:
+    branches:
+      - develop
+  pull_request:
+
+name: Check Rust code
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Install Rust nightly with rustfmt and clippy
+      uses: actions-rs/toolchain@v1
+      with:
+        profile: minimal
+        toolchain: nightly
+        components: rustfmt, clippy
+
+    - name: Cache cargo registry and build outputs
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cargo/registry
+          target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('Cargo.lock') }}
+
+    - name: Check formatting
+      uses: actions-rs/cargo@v1
+      with:
+        command: fmt
+        args: -- --check
+
+    - name: Annotate commit with clippy warnings
+      uses: actions-rs/clippy-check@v1
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+        args: --all-features
+
+    - name: Run cargo check
+      uses: actions-rs/cargo@v1
+      with:
+        command: check
+
+    - name: Run cargo test
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+
+    - name: Run cargo doc
+      uses: actions-rs/cargo@v1
+      with:
+        command: doc
+        args: --no-deps