fix(design): add class name as poperty of select list

[VicKun4937]

• add some optional property for custom css

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 26.30%. Comparing base (de05ff8) to head (e0be1df).
Report is 3 commits behind head on dev.

Files	Patch %	Lines
...s/design/src/components/select-list/SelectList.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #2788      +/-   ##
==========================================
+ Coverage   26.28%   26.30%   +0.02%     
==========================================
  Files        1707     1709       +2     
  Lines       91478    91499      +21     
  Branches    19368    19369       +1     
==========================================
+ Hits        24046    24070      +24     
+ Misses      67432    67429       -3     

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[jikkai]

LGTM