Allow device cluster entities overwrite from v2 quirks

[mrrstux]

Entities created by a v2 quirk should be allowed to overwrite any default generated ones.

Current patch harmonizes entities unique ids format across the component. It requires HA entities unique id migration code.

Fixes home-assistant/core#128253.

[puddly]

@mrrstux I'm going to pick this PR up to rebase it on top of dev and then deal with a bunch of corner cases for migration. Do you mind if I push commits straight to your branch? Or would you prefer I make a separate PR to supersede this one?

[mrrstux]

@puddly Yes, by all means, please take it over!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.70%. Comparing base (6678da3) to head (90d2057).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #328      +/-   ##
==========================================
- Coverage   96.70%   96.70%   -0.01%     
==========================================
  Files          61       61              
  Lines        9874     9897      +23     
==========================================
+ Hits         9549     9571      +22     
- Misses        325      326       +1     

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[puddly]

I think this PR is ready to go for the upcoming beta.

This will affect every ZHA entity in Home Assistant so I think the Home Assistant side of this change needs a bit of a rework and to pre-compute the migration in order to perform it pseudo-atomically.

[puddly]

I've scaled back the changes in this PR to not perform any migrations: it only affects the way entities are created and adds a new attribute to entity info to hold migrations. The format for it is provisional and likely will change (likely to include a version prefix for performance reasons?).