Add the Early Warning Data Store (EWDS) as a data source

[JamesVarndell]

Is your feature request related to a problem? Please describe.

The Early Warning Data Store (EWDS) is a data service like the CDS and ADS, but with a focus on CEMS data. It should work as a data source in much the same way as the cds and ads data sources.

Describe the solution you'd like

It should be possible to get data from the EWDS with calls to from_source, like this:

data = earthkit.data.from_source(
    'ewds',
    'cems-fire-seasonal',
    {
        'format': 'netcdf',
        'release_version': '5',
        'variable': 'fire_weather_index',
        'year': '1991',
        'month': '09',
        'leadtime_hour': '12',
    },
)

Describe alternatives you've considered

No response

Additional context

No response

Organisation

ECMWF

[sandorkertesz]

@JamesVarndell, I noticed there is a feature/686-ewds-source branch. Is this your development?

[JamesVarndell]

Hi @sandorkertesz, yes, I'm happy to take on this development. Shall I assign it to myself? Thanks!

[sandorkertesz]

@JamesVarndell, do you still plan to implement this feature?