Add week period to recorder statistics api

[mib1185]

Proposed change

This adds the week as new possible choice for statistics period

• needs Add week period to statistics card frontend#14162

example based on demo data

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[home-assistant]

Hey there @home-assistant/core, mind taking a look at this pull request as it has been labeled with an integration (recorder) you are listed as a code owner for? Thanks!

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[balloob]

Currently exploring replacing this API with data sources. Let's not expand this API until data sources idea is shot down

[mib1185]

IMO the step from daily to monthly statistics is to big, so the weekly would fit perfect between both.
In my case I would like to have overviews over one year, for this a daily period is to much and monthly to less in resolution.
When will the data sources idea be ready?
Or is there any way to convince you to still extand the current API 😇

[balloob]

Here is the draft proposal for data sources.

You're not wrong about day -> month being a big step. @emontnemery thoughts?

[michelole]

I was planning to suggest exactly this feature --- nice to see a PR is ready! My use case is weather tracking and the weekly statistics would allow an easier comparison between e.g. current and past year.

[emontnemery]

I think this looks great!

Since this is PR about computing multiple weekly data point for display, I don't think it conflicts with the ideas for statistic data sources.

[emontnemery]

This looks great, thanks @mib1185 👍