efmt 0.21.0

Erlang code formatter
Documentation
# Based on https://github.com/actions-rs/meta/blob/master/recipes/quickstart.md

name: CI

on: [push]

jobs:
  check:
    name: Check
    runs-on: ubuntu-latest
    strategy:
      matrix:
        toolchain: [stable, beta, nightly]
    steps:
      - name: Checkout sources
        uses: actions/checkout@v6
      - run: rustup update ${{ matrix.toolchain }}
      - run: rustup default ${{ matrix.toolchain }}
      - run: cargo check --all

  test:
    name: Test Suite
    runs-on: ubuntu-latest
    strategy:
      matrix:
        toolchain: [stable, beta, nightly]
    steps:
      - name: Checkout sources
        uses: actions/checkout@v6
      - run: rustup update ${{ matrix.toolchain }}
      - run: rustup default ${{ matrix.toolchain }}
      - run: cargo test --all

  lints:
    name: Lints
    runs-on: ubuntu-latest
    strategy:
      matrix:
        toolchain: [stable]
    steps:
      - name: Checkout sources
        uses: actions/checkout@v6
      - run: rustup update ${{ matrix.toolchain }}
      - run: rustup default ${{ matrix.toolchain }}
      - run: cargo fmt --all -- --check
      - run: cargo clippy --all -- -D warnings

  plugin-test:
    name: rebar3 plugin test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - uses: erlef/setup-beam@v1
        with:
          otp-version: '28.0'
          rebar3-version: '3.26.0'
      - run: rebar3 help efmt
        working-directory: rebar3_efmt/test/foo
      - run: rebar3 efmt -w
        working-directory: rebar3_efmt/test/foo