Fix/del rot smid rmid tests

[2byrds]

Catches KERIA up with KERIpy changes AND provides all functionality necessary for SIGNIFY-TS integration tests to pass, especially multisig-vlei-issuance but also fixes for rotation, salty, and delegation

[codecov]

Codecov Report

Attention: Patch coverage is 92.70073% with 20 lines in your changes missing coverage. Please review.

Project coverage is 93.06%. Comparing base (18d3ad7) to head (76d9a54).
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/keria/app/aiding.py	83.00%	17 Missing ⚠️
src/keria/app/grouping.py	80.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #254   +/-   ##
=======================================
  Coverage   93.06%   93.06%           
=======================================
  Files          36       36           
  Lines        7121     7198   +77     
=======================================
+ Hits         6627     6699   +72     
- Misses        494      499    +5     

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[2byrds]

There is a small amount of overlap with https://github.com/WebOfTrust/signify-ts/pull/234/files but we'll adjust once either is merged.

[2byrds]

@pfeairheller I have made all the updates based on your review. I also added a small change to grouping.py to address @daviddm issue and corresponding PR which contains an additional signify-ts test (WebOfTrust/signify-ts#258) that will now pass and can be merged after this.

I also ran against all original singify-ts integration tests again: