feat: Support delegate v2

[thorseldon]

No description provided.

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (56799e7) 91.55% compared to head (827e9fa) 94.21%.

❗ Current head 827e9fa differs from pull request most recent head d92d6d4. Consider uploading reports for the commit d92d6d4 to get more accurate results

Files	Patch %	Lines
contracts/stakednft/StNft.sol	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #32      +/-   ##
==========================================
+ Coverage   91.55%   94.21%   +2.66%     
==========================================
  Files          15       15              
  Lines        1456     1486      +30     
  Branches      297      304       +7     
==========================================
+ Hits         1333     1400      +67     
+ Misses        123       86      -37     

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