Improve git ignore rules documentation #204

	# avr-libcpp
	#
	# Copyright 2020-2024, Andrew Countryman <[email protected]> and the avr-libcpp
	# contributors
	#
	# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this
	# file except in compliance with the License. You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software distributed under
	# the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	# KIND, either express or implied. See the License for the specific language governing
	# permissions and limitations under the License.

	# Description: GitHub Actions CI workflow.

	name: CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	analyze-lizard:
	name: Analyze (lizard)
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive
	- name: Analyze
	shell: bash
	run: ./ci/analyze.sh --analyzer lizard

	analyze-shellcheck:
	name: Analyze (shellcheck)
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: recursive
	- name: Analyze
	shell: bash
	run: ./ci/analyze.sh --analyzer shellcheck

	format:
	name: Format
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v4
	- name: Configure dependencies
	shell: bash
	run: sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-10 100 && sudo update-alternatives --set clang-format /usr/bin/clang-format-10
	- name: Format
	shell: bash
	run: ./ci/format.sh

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