Add machinery for built-in constants, such as `c` #770

	# Copyright 2023 Aurora Operations, Inc.
	#
	# 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
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	name: clang-format-lint

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	lint-clang-format:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b #v4.1.5
	- uses: DoozyX/clang-format-lint-action@c71d0bf4e21876ebec3e5647491186f8797fde31 #v0.18.2
	with:
	source: './au'
	extensions: 'hh,cc'
	clangFormatVersion: 14.0.0
	style: file

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