Fix type hints

[hoh]

• Fix: Typing of item hashes were str not ItemHash
• Fix: Typing: Protocol AccountFromPrivateKey lacked method sign_raw

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.17%. Comparing base (fd1b0e1) to head (68f1a47).
Report is 1 commits behind head on main.

❗ Current head 68f1a47 differs from pull request most recent head bd6f43d

Please upload reports for the commit bd6f43d to get more accurate results.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #121      +/-   ##
==========================================
+ Coverage   84.15%   84.17%   +0.01%     
==========================================
  Files          27       27              
  Lines        1130     1131       +1     
  Branches      188      188              
==========================================
+ Hits          951      952       +1     
  Misses        176      176              
  Partials        3        3              

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[github-actions]

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