ci: Add basic pull request checker #13

	---
	name: Quick Checker

	on:
	push:
	branches: [ 'ci-*' ]
	pull_request:
	branches: [ 'main' ]

	permissions:
	contents: read

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 500
	- name: Pull pain
	run: git fetch --no-tags --no-recurse-submodules --depth=500 origin main
	- name: Debug
	run: \|
Check failure on line 25 in .github/workflows/prereq.yml View workflow run for this annotation GitHub Actions / .github/workflows/prereq.yml Invalid workflow file `You have an error in your yaml syntax on line 25`
	echo $GITHUB_REF_NAME
	git rev-list -1 $GITHUB_REF_NAME
	git rev-list -1 origin/main
	- name: Recent enough main?
	run: git merge-base origin/main $GITHUB_REF_NAME
	- name: Check Email
	run: sh ./tools/build/check-email.sh origin/main..$GITHUB_REF_NAME
	- name: Check Style
	run: ./tools/build/checkstyle9.pl -color=always origin/main..$GITHUB_REF_NAME

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