ci: add ci

.github/workflows/ci.yml

@@ -0,0 +1,40 @@
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+name: Tests
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: cargo test
+        run: |
+            cargo test
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+      - name: cargo fmt
+        run: cargo fmt --all -- --check
+      - name: cargo clippy
+        run: cargo clippy -- -D warnings