Update tuya/ts0601_cover.py quirk to add _TZE200_vexa5o82

[karora]

Proposed change

The _TZE200_vexa5o82 is yet another variant of the Tuya Smart Blinds, which I recently purchased on Ali Express. With this change the blind works well for me.

Additional information

This is a trivial change.

Device diagnostics

zha-b306388cd2e1e0bd754134eb9054ec01-_TZE200_vexa5o82 TS0601-cb537191b46c1acdf65eb481be6456c1.json

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
• Device diagnostics data has been attached

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.12%. Comparing base (500e74e) to head (484dd31).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #4377   +/-   ##
=======================================
  Coverage   92.12%   92.12%           
=======================================
  Files         358      358           
  Lines       11917    11917           
=======================================
  Hits        10979    10979           
  Misses        938      938           

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