Noaa-coops

Adds:
- Tests against basic functionality
- Type hints and docstrings to classes, methods, functions
- `get_stations_from_bbox()` function to find stations in a box defined by lat and lon coordinates

- Cleans up imports in `__init__.py` for package initialization.
- Replaces [conda](https://docs.conda.io/en/latest/miniconda.html) with [poetry](https://python-poetry.org/) to manage package dependencies and the development environment.
- Updates the README to make it clear how to install the package (see https://github.com/GClunies/noaa_coops/pull/32) and provide better examples on use.
- Refactors the Github workflows to test, lint, and publish the python package code.

This release sets a more strict requirement dependency of `pandas>=1.1.3` to prevent errors caused by the now deprecated `pandas.io.json.json_normalize`. In `pandas>=1.1.3` it is now `pandas.json_normalize`.

This release fixes issues causes by bad Endpoint URLs for the various NOAA APIS. See 17.