testing: improve tests and add testing workflow #1

	name: Test PR

	on:
	pull_request:
	branches: [ main ]

	jobs:
	test:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: '3.12'

	- name: Install uv
	uses: astral-sh/setup-uv@v3

	- name: Install dependencies
	run: \|
	cd src/python
	uv sync

	- name: Run test_messages.py
	env:
	LETTA_API_KEY: ${{ secrets.LETTA_API_KEY }}
	run: \|
	cd src/python
	uv run pytest tests/test_messages.py -v

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