feat(connector): add random seed for datagen

[tabVersion]

Signed-off-by: tabVersion [email protected]

What's changed and what's your intention?

PLEASE DO NOT LEAVE THIS EMPTY !!!

Please explain IN DETAIL what the changes are in this PR and why they are needed:

allow datagen to generate random value with specific seed

this pr only works with random int and float. do not support generating deterministic timestamp and varchar.

• Summarize your change (mandatory)
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
• Describe any limitations of the current code (optional)
• Add the 'user-facing changes' label if your PR contains changes that are visible to users (optional)

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

part of #3095

[shanicky]

LGTM

[codecov]

Codecov Report

Merging #3124 (ff7c80e) into main (46d8875) will increase coverage by 0.11%.
The diff coverage is 96.82%.

@@            Coverage Diff             @@
##             main    #3124      +/-   ##
==========================================
+ Coverage   73.47%   73.59%   +0.11%     
==========================================
  Files         735      735              
  Lines      100477   100537      +60     
==========================================
+ Hits        73830    73991     +161     
+ Misses      26647    26546     -101     

Flag	Coverage Δ
rust	73.59% <96.82%> (+0.11%)	⬆️

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

Impacted Files	Coverage Δ
src/connector/src/datagen/mod.rs	0.00% <ø> (ø)
src/connector/src/datagen/source/reader.rs	82.94% <96.82%> (+82.94%)	⬆️
src/meta/src/hummock/mock_hummock_meta_client.rs	43.82% <0.00%> (-1.13%)	⬇️
src/meta/src/barrier/mod.rs	69.13% <0.00%> (-0.33%)	⬇️
src/storage/src/hummock/local_version_manager.rs	84.12% <0.00%> (-0.16%)	⬇️
src/connector/src/macros.rs	10.81% <0.00%> (+2.70%)	⬆️
...onnector/src/datagen/source/field_generator/mod.rs	60.71% <0.00%> (+16.07%)	⬆️
src/connector/src/datagen/split.rs	16.66% <0.00%> (+16.66%)	⬆️

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