Add GitHub Actions workflows

.github/workflows/codespell.yml

@@ -0,0 +1,19 @@
+---
+name: Codespell
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Codespell
+        uses: codespell-project/actions-codespell@v2

.github/workflows/rust.yml

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+---
+name: Rust
+
+on:
+  push:
+    branches: [ "main" ]
+    paths:
+      - 'Cargo.toml'
+      - 'Cargo.lock'
+      - 'src/**'
+      - '.github/workflows/rust.yml'
+  pull_request:
+    branches: [ "main" ]
+    paths:
+      - 'Cargo.toml'
+      - 'Cargo.lock'
+      - 'src/**'
+      - '.github/workflows/rust.yml'
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check format
+        run: cargo fmt --check
+      - name: Clippy
+        run: cargo clippy
+
+  docs:
+    name: Build documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build documentation
+        run: cargo doc
+
+  codecov:
+    needs: lint
+    name: Code Coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build
+        run: cargo build --verbose
+      - name: Build Benchmarks
+        run: cargo build --benches --package minikalman
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: llvm-tools-preview
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+      - name: Install nextest
+        uses: taiki-e/install-action@nextest
+      - name: Generate code coverage
+        run: cargo llvm-cov nextest --features=std,unsafe --workspace ---lcov --output-path lcov.info
+      - name: Upload coverage to Codecov
+        uses: codecov/[email protected]
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: lcov.info
+          fail_ci_if_error: true
+
+  build-std:
+    needs:
+      - lint
+      - docs
+    name: Build and Test (floating-point)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run doctests
+        run: cargo test --doc --verbose --package marg-orientation --no-default-features --features=std
+
+  build-others:
+    needs:
+      - codecov
+      - build-std
+    name: Build and Test
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ macos-latest, windows-latest ]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run tests
+        run: cargo test --package marg-orientation --verbose
+      - name: Run doctests
+        run: cargo test --doc --package marg-orientation --verbose