Update WIT definitions, add tests & CI infra #4

	name: Python CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	- name: Install uv
	run: pip install uv
	- name: Install dependencies
	run: uv sync
	- name: Install viceroy
	run: cargo install --git https://github.com/fastly/Viceroy.git --branch sunfishcode/sync-wit viceroy
	- name: Build WebAssembly component
	run: make app.wasm
	- name: Install dependencies
	run: uv sync --extra dev --extra test
	- name: Check formatting
	run: make format-check
	- name: Run linting
	run: make lint
	- name: Run tests
	run: make test

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