build: add firefox add-on linting #6

	name: "Pull Request Checks"

	on:
	pull_request:

	jobs:
	lint:
	name: "Lint"
	runs-on: ubuntu-latest
	steps:
	- name: "🛎 Checkout"
	uses: actions/checkout@v3
	- name: "🔧 Setup"
	uses: ./.github/actions/setup
	- name: "👕 Lint"
	run: yarn lint

	build:
	name: "Build"
	runs-on: ubuntu-latest
	steps:
	- name: "🛎 Checkout"
	uses: actions/checkout@v3
	- name: "🔧 Setup"
	uses: ./.github/actions/setup
	- name: "🏗️ Build"
	run: yarn build
	- name: "🗜️ Zip build"
	run: zip -r build.zip .build/
	- name: "📤 Upload build"
	uses: actions/upload-artifact@v3
	with:
	name: build
	path: build.zip

	test:
	name: "Test"
	runs-on: ubuntu-latest
	steps:
	- name: "🛎 Checkout"
	uses: actions/checkout@v3
	- name: "🔧 Setup"
	uses: ./.github/actions/setup
	- name: "🧪 Test"
	run: yarn test

	##
	# needs install/build
	##

	validate_firefox:
	name: "Validate Firefox"
	needs: build
	runs-on: ubuntu-latest
	steps:
	- name: "🛎 Checkout"
	uses: actions/checkout@v3
	- name: "🔧 Setup"
	uses: ./.github/actions/setup
	- name: "📥 Download build"
	uses: actions/download-artifact@v3
	with:
	name: build
	- name: "🗜️ Unzip build"
	run: unzip build.zip
	- name: "✅ Validate"
	run: yarn validate:firefox

Provide feedback