example(LLM): build llama2 other base models

[tianweidut]

Description

• build other llama2 models: 7b/7b-chat/13b/13b-chat/70b/70b-chat
  

Modules

• Others

Checklist

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

[codecov]

Codecov Report

Merging #2533 (7814625) into main (e01cc8d) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2533   +/-   ##
=======================================
  Coverage   91.32%   91.33%           
=======================================
  Files         103      102    -1     
  Lines       11947    11863   -84     
  Branches       14        0   -14     
=======================================
- Hits        10911    10835   -76     
+ Misses       1036     1028    -8     

Flag	Coverage Δ
console	?
standalone	91.33% <ø> (-0.08%)	⬇️
unittests	91.33% <ø> (+<0.01%)	⬆️

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see 4 files with indirect coverage changes