Add inverter size to Forecast.Solar

[klaasnicolaas]

Proposed change

Adds the ability to Forecast.Solar to specify an inverter size in watts.
This required updating the python package to: 2.2.0

https://github.com/home-assistant-libs/forecast_solar/releases/tag/2.2.0

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request: Add info about the new inverter size option home-assistant.io#22051

Checklist

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[probot-home-assistant]

Hey there @frenck, mind taking a look at this pull request as it has been labeled with an integration (forecast_solar) you are listed as a code owner for? Thanks!
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[craigcabrey]

Thanks for working on this!

How would this work for systems that have two or more strings in different directions? For example, I have two forecast integrations setup, one for my east array and one for my west array. However, they both share the same 7.6 kW inverter.

Seems like we might need something more "global"?

[klaasnicolaas]

I don't really have an answer to that at the moment, since it is a fairly specific situation that is not directly taken into account from the API. But maybe the community forum is a better place to talk about this.

[frenck]

Looks good, @klaasnicolaas 👍
Small comment to remove space from a key (I noticed we do that for module power as well, but let's ignore that for now... can't change that without migration).

[frenck]

Thanks, @klaasnicolaas 👍