Paddlenlp embedding support

[SimFG]

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[codecov]

Codecov Report

Merging #377 (638cd9e) into dev (a2b7466) will increase coverage by 0.05%.
The diff coverage is 97.87%.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #377      +/-   ##
==========================================
+ Coverage   93.97%   94.02%   +0.05%     
==========================================
  Files          79       80       +1     
  Lines        2654     2696      +42     
==========================================
+ Hits         2494     2535      +41     
- Misses        160      161       +1     

Impacted Files	Coverage Δ
gptcache/embedding/paddlenlp.py	96.87% <96.87%> (ø)
gptcache/adapter/api.py	98.13% <100.00%> (+0.03%)	⬆️
gptcache/adapter/stability_sdk.py	93.44% <100.00%> (ø)
gptcache/embedding/__init__.py	100.00% <100.00%> (ø)
gptcache/utils/__init__.py	90.09% <100.00%> (+0.51%)	⬆️