enhance(client): support checkpoint in remote datastore

[jialeicui]

Description

Modules

• UI
• Controller
• Agent
• Client
• Python-SDK
• Others

Checklist

• run code format and lint check
• add unit test
• add necessary doc

[codecov]

Codecov Report

❌ Patch coverage is 80.48780% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.88%. Comparing base (b7524b5) to head (b543052).
⚠️ Report is 36 commits behind head on main.

Files with missing lines	Patch %	Lines
client/starwhale/api/_impl/data_store.py	54.54%	5 Missing ⚠️
client/starwhale/base/client/api/data_store.py	78.57%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3099      +/-   ##
============================================
+ Coverage     82.68%   91.88%   +9.19%     
============================================
  Files           573      138     -435     
  Lines         31970    16160   -15810     
  Branches       1865        0    -1865     
============================================
- Hits          26435    14848   -11587     
+ Misses         4709     1312    -3397     
+ Partials        826        0     -826     

Flag	Coverage Δ
console	?
controller	?
standalone	91.88% <80.48%> (-0.01%)	⬇️
unittests	91.88% <80.48%> (+0.25%)	⬆️

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