Add erc2477 interface.

[MoMannn]

No description provided.

[codecov-commenter]

Codecov Report

Merging #717 (4170f65) into master (80d393f) will not change coverage.
The diff coverage is n/a.

❗ Current head 4170f65 differs from pull request most recent head a1e46e7. Consider uploading reports for the commit a1e46e7 to get more accurate results

@@           Coverage Diff           @@
##           master     #717   +/-   ##
=======================================
  Coverage   67.86%   67.86%           
=======================================
  Files         139      139           
  Lines        2228     2228           
  Branches      243      243           
=======================================
  Hits         1512     1512           
  Misses        649      649           
  Partials       67       67           

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