Fix Tuya RoyalGardineer valve water consumed value

[mrrstux]

Proposed change

Converts RoyalGardineer valve water consumed value from deciliters to liters.

Additional information

Changes TuyaQuirkBuilder.tuya_meterig API to allow custom value scale.

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 89.88%. Comparing base (979551d) to head (50b4cfe).
Report is 7 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #3558      +/-   ##
==========================================
+ Coverage   89.85%   89.88%   +0.02%     
==========================================
  Files         321      322       +1     
  Lines       10374    10404      +30     
==========================================
+ Hits         9322     9352      +30     
  Misses       1052     1052              

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[TheJulianJES]

This looks good, thanks!