chore: explicitly adds pydantic package

ci: improves and extends workflow

test: adds simple testcase for homepage

test: adds httpx package to enable FastAPI test client

chore: fixes numerous linting issues

chore(poetry): adds linting and testing configuration to pyproject.toml

build: refactors Dockerfile to run container as root

ci: WIP sets up tests in ci

chore: adds pytest

chore: bump Python dependencies to latest versions

chore: bumps poetry to 1.4

chore: updates Python to 3.10

wip docs

update README on documentation workflow

ci workflow (GitHub Actions) to build docs site