feat: parameters can be described as Pydantic model for rich schema

[JoanFM]

Goals:

• resolves #ISSUE-NUMBER

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• ...

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• check and update documentation. See guide and ask the team.

[codecov]

Codecov Report

Merging #6001 (b7c4824) into master (4b4c4ac) will decrease coverage by 3.04%.
Report is 4 commits behind head on master.
The diff coverage is 36.86%.

@@            Coverage Diff             @@
##           master    #6001      +/-   ##
==========================================
- Coverage   78.28%   75.25%   -3.04%     
==========================================
  Files         144      144              
  Lines       13587    13781     +194     
==========================================
- Hits        10637    10371     -266     
- Misses       2950     3410     +460     

Flag	Coverage Δ
jina	75.25% <36.86%> (-3.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
jina/clients/base/http.py	93.16% <0.00%> (-2.46%)	⬇️
jina/clients/request/__init__.py	100.00% <ø> (ø)
...untimes/gateway/async_request_response_handling.py	91.66% <0.00%> (-1.47%)	⬇️
...ina/serve/runtimes/gateway/graph/topology_graph.py	72.37% <0.00%> (-4.44%)	⬇️
...ve/runtimes/gateway/http_fastapi_app_docarrayv2.py	0.00% <0.00%> (ø)
jina/serve/runtimes/helper.py	24.16% <0.00%> (-1.28%)	⬇️
jina/serve/stream/__init__.py	87.42% <ø> (ø)
jina/types/request/data.py	81.09% <25.00%> (-2.18%)	⬇️
jina/serve/executors/__init__.py	67.83% <35.15%> (-10.17%)	⬇️
jina/clients/mixin.py	89.80% <54.16%> (-6.60%)	⬇️
... and 4 more

... and 19 files with indirect coverage changes