feat(client): add environment variables for model copy timeout and retries

[xuchuan]

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

Merging #2395 (ca744e6) into main (68239dc) will increase coverage by 7.49%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #2395      +/-   ##
============================================
+ Coverage     83.70%   91.20%   +7.49%     
============================================
  Files           432       99     -333     
  Lines         23425    11569   -11856     
  Branches       1366        0    -1366     
============================================
- Hits          19607    10551    -9056     
+ Misses         3194     1018    -2176     
+ Partials        624        0     -624     

Flag	Coverage Δ
console	?
controller	?
standalone	91.20% <100.00%> (+0.01%)	⬆️
unittests	91.20% <100.00%> (+0.09%)	⬆️

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Impacted Files	Coverage Δ
client/starwhale/core/model/copy.py	92.87% <100.00%> (ø)

... and 334 files with indirect coverage changes