Improve typing in Tuya classes

[TheJulianJES]

Proposed change

This improves typing in the base Tuya classes.

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.97%. Comparing base (ff5bf0b) to head (060dccd).
Report is 7 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #3904   +/-   ##
=======================================
  Coverage   90.96%   90.97%           
=======================================
  Files         327      327           
  Lines       10608    10611    +3     
=======================================
+ Hits         9650     9653    +3     
  Misses        958      958           

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