Start the project by adding a setup file, conda environment, and first
docs.

Add docstring throughout much of the HRRR code and add a sample notebook
showing a use case.

This includes incoming/outgoing shortwave and longwave per row for a
site and datetime.

Add new enum type to indicate where pont data were sourced from.

Start using SQLAlchemy to map classes to tables that have a 'geom'
column.

Start `Base` class that uses the deferred reflection approach to map DB
tables to classes.

Update the radiation DB table to include the newly added `data_source`
column as primary key. Also adds NOT NULL constraint to require at least
the incoming shortwave as populated column value.

Updates to show use of `Radiation` and `DataSource` class.

Also updates to have all columns required (NOT NULL)