Add project tools

Signed-off-by: Wiktor Kwapisiewicz <wiktor@metacode.biz>

.codespellrc

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+[codespell]
+skip = .cargo,.git,target,Cargo.lock
+ignore-words-list = crate,ser

.gitattributes

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+* text eol=lf

.github/FUNDING.yml

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+github: wiktor-k

.github/workflows/misc.yml

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+name: Misc
+
+on:
+  pull_request:
+  push:
+    tags:
+      - 'v*'
+    branches: [ main ]
+  workflow_dispatch:
+
+concurrency:
+  group: misc-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  code-coverage:
+    name: Code coverage
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install code coverage tool
+        uses: actions-rs/install@v0.1
+        with:
+          crate: cargo-tarpaulin
+          version: latest
+      - name: Collect code coverage
+        run: cargo tarpaulin --out Xml
+      - name: Upload code coverage
+        uses: codecov/codecov-action@v2
+
+  valgrind:
+    name: Valgrind
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install valgrind
+        run: sudo apt-get install valgrind
+      - name: Install cargo-valgrind
+        uses: actions-rs/install@v0.1
+        with:
+          crate: cargo-valgrind
+          version: latest
+      - name: Run valgrind tests
+        run: cargo valgrind test

.github/workflows/rust.yml

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+name: CI
+
+on:
+  pull_request:
+  push:
+    tags:
+      - 'v*'
+    branches: [ main ]
+  workflow_dispatch:
+
+concurrency:
+  group: rust-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  check-spelling:
+    name: Check spelling
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo install --locked just
+      - run: sudo apt-get install -y codespell
+      - name: Check spelling
+        run: just spelling
+
+  formatting:
+    name: Check formatting
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+        - os: macos-latest
+        - os: windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo install --locked just
+      - run: rustup install nightly
+      - run: rustup component add rustfmt --toolchain nightly
+      - name: Check formatting
+        run: just formatting
+
+  tests:
+    name: Unit tests
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+        - os: macos-latest
+        - os: windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo install --locked just
+      - name: Run unit tests
+        run: just tests
+
+  deps:
+    name: Check dependencies
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+        - os: macos-latest
+        - os: windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo install --locked just cargo-deny
+      - name: Run dependencies check
+        run: just dependencies
+
+  lints:
+    name: Clippy lints
+    strategy:
+      matrix:
+        include:
+        - os: ubuntu-latest
+        - os: macos-latest
+        - os: windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo install --locked just
+      - name: Check for lints
+        run: just lints

.justfile

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+#!/usr/bin/env -S just --working-directory . --justfile
+# Since this is a first recipe it's being run by default.
+# Faster checks need to be executed first for better UX.  For example
+
+# codespell is very fast. cargo fmt does not need to download crates etc.
+check: spelling formatting lints dependencies tests
+
+# Checks common spelling mistakes
+spelling:
+    codespell
+
+# Checks source code formatting
+formatting:
+    just --unstable --fmt --check
+    # We're using nightly to properly group imports, see .rustfmt.toml
+    cargo +nightly fmt -- --check
+
+# Lints the source code
+lints:
+    cargo clippy --all -- -D warnings
+
+# Checks for issues with dependencies
+dependencies:
+    cargo deny check
+
+# Runs all unit tests. By default ignored tests are not run. Run with `ignored=true` to run only ignored tests
+tests:
+    cargo test --all
+
+# Checks for commit messages
+check-commits REFS='main..':
+    #!/usr/bin/env bash
+    set -euo pipefail
+    for commit in $(git rev-list "{{ REFS }}"); do
+      MSG="$(git show -s --format=%B "$commit")"
+      CODESPELL_RC="$(mktemp)"
+      git show "$commit:.codespellrc" > "$CODESPELL_RC"
+      if ! grep -q "Signed-off-by: " <<< "$MSG"; then
+        printf "Commit %s lacks \"Signed-off-by\" line.\n" "$commit"
+        printf "%s\n" \
+            "  Please use:" \
+            "    git rebase --signoff main && git push --force-with-lease" \
+            "  See https://developercertificate.org/ for more details."
+        exit 1;
+      elif ! codespell --config "$CODESPELL_RC" - <<< "$MSG"; then
+        printf "The spelling in commit %s needs improvement.\n" "$commit"
+        exit 1;
+      else
+        printf "Commit %s is good.\n" "$commit"
+      fi
+    done
+
+# Fixes common issues. Files need to be git add'ed
+fix:
+    #!/usr/bin/env bash
+    if ! git diff-files --quiet ; then
+        echo "Working tree has changes. Please stage them: git add ."
+        exit 1
+    fi
+
+    codespell --write-changes
+    just --unstable --fmt
+    cargo clippy --fix --allow-staged
+
+    # fmt must be last as clippy's changes may break formatting
+    cargo +nightly fmt