enhance: add some apis in Restful(#38733)

[smellthemoon]

issue: #38709
pr: #38733 #38979

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/run-cpu-e2e

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[codecov]

Codecov Report

Attention: Patch coverage is 87.59690% with 16 lines in your changes missing coverage. Please review.

Project coverage is 81.05%. Comparing base (055cbe1) to head (cb3946b).
Report is 2 commits behind head on 2.5.

Files with missing lines	Patch %	Lines
...nternal/distributed/proxy/httpserver/request_v2.go	23.80%	16 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              2.5   #38875       +/-   ##
===========================================
+ Coverage   69.45%   81.05%   +11.59%     
===========================================
  Files         294     1383     +1089     
  Lines       26419   195647   +169228     
===========================================
+ Hits        18349   158575   +140226     
- Misses       8070    31491    +23421     
- Partials        0     5581     +5581     

Components	Coverage Δ
Client	78.26% <ø> (∅)
Core	69.45% <ø> (ø)
Go	83.03% <87.59%> (∅)

Files with missing lines	Coverage Δ
...nternal/distributed/proxy/httpserver/handler_v2.go	92.95% <100.00%> (ø)
...nternal/distributed/proxy/httpserver/request_v2.go	81.81% <23.80%> (ø)

... and 1087 files with indirect coverage changes

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