[Template] add unified template.

[wtmlon]

Description

add new unified template.

[paddle-bot]

Thanks for your contribution!

[codecov]

Codecov Report

Attention: Patch coverage is 1.21212% with 326 lines in your changes missing coverage. Please review.

Project coverage is 46.79%. Comparing base (64afc81) to head (9e13fd9).

Files with missing lines	Patch %	Lines
paddlenlp/datasets/template.py	0.00%	225 Missing ⚠️
paddlenlp/datasets/formatter.py	0.00%	94 Missing ⚠️
paddlenlp/transformers/tokenizer_utils.py	33.33%	6 Missing ⚠️
paddlenlp/transformers/tokenizer_utils_base.py	50.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (1.21%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.
❌ Your project check has failed because the head coverage (46.79%) is below the target coverage (58.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #10633      +/-   ##
===========================================
- Coverage    46.91%   46.79%   -0.13%     
===========================================
  Files          799      801       +2     
  Lines       132460   132790     +330     
===========================================
- Hits         62148    62142       -6     
- Misses       70312    70648     +336     

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