Add CI workflow. #2

	name: Elixir CI

	on:
	push:
	branches: ["main"]
	pull_request:
	branches: ["main"]

	permissions:
	contents: read

	env:
	ELIXIR_VERSION: "1.16.2"
	ERLANG_VERSION: "26.2"

	jobs:
	build:
	name: Build and test
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Elixir
	uses: erlef/setup-beam@v1
	with:
	elixir-version: ${{ env.ELIXIR_VERSION }}
	otp-version: ${{ env.ERLANG_VERSION }}

	- name: Restore dependencies cache
	uses: actions/cache@v4
	with:
	path: deps
	key: ${{ runner.os }}-mix-${{ env.ELIXIR_VERSION }}-${{ env.ERLANG_VERSION }}-${{ hashFiles('**/mix.lock') }}

	- name: Install dependencies
	run: mix deps.get

	- name: Run tests
	run: mix test

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