Diagnostics import for October

[puddly]

The previous script I was using for this task (TODO: clean it up and move it here to be run by CI) had a bug and missed diagnostics JSON present in the issue body, picking up only those in comments.

Over half are Tuya devices.

[puddly]

The last commit is due to a failure here:

$ python -m tools.regenerate_diagnostics tests/data/devices/tze200-a7sghmms-ts0601.json

For some reason, the cluster handler-specific initialization code did not run. The cluster handler computed something that realistically should be handled by the entity so I ported the code over into there. This has the benefit of now allowing the summation formatting to change at runtime.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.99%. Comparing base (76550e0) to head (70c7843).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #557      +/-   ##
==========================================
+ Coverage   96.95%   96.99%   +0.04%     
==========================================
  Files          63       63              
  Lines       10534    10543       +9     
==========================================
+ Hits        10213    10226      +13     
+ Misses        321      317       -4     

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