feat(model): add model diff api for server

[goldenxinxing]

Description

1. tune the response's structure of model info api from flatten list to node list
2. add model diff api
3. refactor model download api

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 #1591 (eb62de1) into main (e07a7a6) will increase coverage by 0.00%.
The diff coverage is 75.29%.

@@            Coverage Diff             @@
##               main    #1591    +/-   ##
==========================================
  Coverage     82.66%   82.66%            
- Complexity     1857     1889    +32     
==========================================
  Files           341      342     +1     
  Lines         17678    17788   +110     
  Branches        931      951    +20     
==========================================
+ Hits          14613    14704    +91     
- Misses         2672     2686    +14     
- Partials        393      398     +5     

Flag	Coverage Δ
controller	75.04% <75.29%> (+0.09%)	⬆️
standalone	89.74% <ø> (ø)
unittests	89.74% <ø> (ø)

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

Impacted Files	Coverage Δ
client/starwhale/core/model/model.py	86.68% <ø> (ø)
...tarwhale/mlops/api/protocol/model/ModelInfoVo.java	0.00% <ø> (ø)
...hale/mlops/api/protocol/runtime/RuntimeInfoVo.java	0.00% <ø> (ø)
...starwhale/mlops/domain/storage/StorageService.java	2.70% <0.00%> (ø)
.../ai/starwhale/mlops/domain/model/ModelService.java	66.66% <60.60%> (+0.30%)	⬆️
...n/java/ai/starwhale/mlops/api/ModelController.java	90.52% <80.00%> (+1.52%)	⬆️
...starwhale/mlops/api/protocol/storage/FileNode.java	85.10% <85.10%> (ø)
...starwhale/mlops/api/protocol/storage/FileDesc.java	100.00% <100.00%> (ø)
...starwhale/mlops/domain/dataset/DatasetService.java	83.33% <100.00%> (ø)
...starwhale/mlops/domain/runtime/RuntimeService.java	71.62% <100.00%> (ø)
... and 2 more

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[dreamlandliu]

lgtm

[anda-ren]

lgtm