docs: add RELEASING.md doc #997

	name: pygls-playground

	on:
	push:
	branches:
	- main

	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ubuntu-latest

	defaults:
	run:
	shell: bash
	working-directory: .vscode/extensions/pygls-playground

	steps:
	- uses: actions/checkout@v4

	- uses: actions/setup-python@v5
	with:
	python-version: "3.x"

	- uses: actions/setup-node@v4
	with:
	node-version: "18.x"
	cache: 'npm'
	cache-dependency-path: '.vscode/extensions/pygls-playground/package-lock.json'

	- name: Install dependencies
	run: \|
	npm ci
	npm i vsce

	- name: Lint
	run: npx eslint src/*.ts

	- name: Compile
	run: npm run compile

	- name: Replace package.json version
	run: \|
	replace_packagejson_version() {
	version_line=$(grep -o '"version".*' $1)
	version=$(python -m json.tool package.json \| awk -F'"' '/version/{print $4}')
	build_version=$version+$2
	build_version_line=${version_line/$version/$build_version}
	sed -i "s\|$version_line\|$build_version_line\|g" $1

	cat $1
	}

	replace_packagejson_version package.json $GITHUB_RUN_ID

	- name: Build VSIX
	run: npx vsce package

	- name: Validate VSIX
	run: \|
	npx vsce ls \| grep package.json
	npx vsce ls \| grep out/extension.js

	- name: Upload VSIX
	uses: actions/upload-artifact@v4
	with:
	name: pygls-playground-vsix
	# The path must be rooted from the directory GitHub Actions starts
	# from, not the working-directory.
	path: .vscode/extensions/pygls-playground/*.vsix
	if-no-files-found: error

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