chore: add docs/checkhealth around gotestsum, add docs on -race and cgo #975

	name: test
	on:
	workflow_dispatch:
	pull_request:
	push:
	branches:
	- main
	schedule:
	- cron: "0 10 * * 0"
	jobs:
	nvim:
	strategy:
	matrix:
	version: [stable, nightly]
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Neovim setup
	uses: rhysd/action-setup-vim@v1
	with:
	neovim: true
	version: ${{ matrix.version }}
	- name: Neovim version
	run: nvim --version
	- name: Bootstrap plenary for CI
	run: \|
	mkdir -p ~/.local/share/nvim/site/pack/vendor/start
	git clone --depth 1 https://github.com/nvim-lua/plenary.nvim ~/.local/share/nvim/site/pack/vendor/start/plenary.nvim
	ln -s $(pwd) ~/.local/share/nvim/site/pack/vendor/start
	- name: Run tests
	run: make test-lua
	go:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: 1.23
	- name: Run tests
	run: make test-go

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