chore: add CI 3

Author: Riateche

.github/workflows/pyth.yml

@@ -0,0 +1,23 @@
+name: Check Pythnet
+
+on:
+  pull_request:
+  push:
+    branches: [main]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Install Rust 1.60.0
+        run: rustup install 1.60.0
+      - name: Install Rust nightly-2022-04-01
+        run: rustup install nightly-2022-04-01
+      - name: Check formatting
+        run: cargo +nightly-2022-04-01 fmt -- --check
+      - name: Check clippy
+        run: cargo +1.60.0 clippy --bins --tests --examples -- --deny warnings
+      - name: Run tests
+        run: cargo test