example(LLM): add mistral 7b+vllm example for llm-leaderboard

[tianweidut]

Description

example for some new areas:

• using vLLM
• using predict batch
  example: http://e2e-20240201.pre.intra.starwhale.ai/projects/1/jobs/21/tasks

Modules

• Others

Checklist

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (411c05d) 82.99% compared to head (a8c918f) 92.31%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #3133      +/-   ##
============================================
+ Coverage     82.99%   92.31%   +9.31%     
============================================
  Files           575      139     -436     
  Lines         32293    16268   -16025     
  Branches       1895        0    -1895     
============================================
- Hits          26803    15017   -11786     
+ Misses         4656     1251    -3405     
+ Partials        834        0     -834     

Flag	Coverage Δ
console	?
controller	?
standalone	92.31% <ø> (+0.05%)	⬆️
unittests	92.31% <ø> (+0.32%)	⬆️

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[goldenxinxing]

LGTM