Add ZTH-02 Tuya _TZE204_ksz749x8 temp/humidity sensor

[jankaderabek]

Proposed change

Add support for _TZE204_ksz749x8 as a temp/humidity sensor (ZTH-02). I bought one under the name EMOS GoSmart EGS0102.

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 88.49%. Comparing base (acecf70) to head (441af48).
Report is 2 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #3360   +/-   ##
=======================================
  Coverage   88.49%   88.49%           
=======================================
  Files         305      305           
  Lines        9621     9621           
=======================================
  Hits         8514     8514           
  Misses       1107     1107           

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[TheJulianJES]

Thanks!