Http V2 (Part 1): Add req sychroznier and built in resp types

[YunchuWang]

• Add request synchronizer interface for addressing route parameters synchronization from host rpc trigger metadata to http request payload
• Add support for all fastapi supported built in response types which will be supported in http v2
• tests

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.42%. Comparing base (ad5a21c) to head (531f575).
Report is 1 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev      #23      +/-   ##
==========================================
+ Coverage   97.64%   99.42%   +1.78%     
==========================================
  Files          12        8       -4     
  Lines         382      348      -34     
  Branches       23       92      +69     
==========================================
- Hits          373      346      -27     
+ Misses          8        1       -7     
  Partials        1        1              

Flag	Coverage Δ
unittests	99.42% <100.00%> (+1.78%)	⬆️

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