feat: use SAID for long running operation oid instead of identifier prefix

[iFergal]

To address #285.

I initially required this for exn messages but decided to apply it everywhere because otherwise I think we may run into other edge case issues.

Signify-TS integration tests all pass with minor adjustment.

[codecov]

Codecov Report

Attention: Patch coverage is 97.85714% with 3 lines in your changes missing coverage. Please review.

Project coverage is 93.68%. Comparing base (18d3ad7) to head (9df840d).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
src/keria/core/longrunning.py	90.32%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #289      +/-   ##
==========================================
+ Coverage   93.06%   93.68%   +0.62%     
==========================================
  Files          36       36              
  Lines        7121     7859     +738     
==========================================
+ Hits         6627     7363     +736     
- Misses        494      496       +2     

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[iFergal]

will improve coverage later/tomorrow but otherwise ready for review impl wise

[2byrds]

LGTM

[rodolfomiranda]

LGTM

[iFergal]

@rodolfomiranda @2byrds The oid I had for OpTypes.submit didn't make sense. The name always matched the identifier and the code shouldn't be there (related to 2FA).

I've reverted that section because longrunning.py simply checks if the submits have finished completing for all things related to that agent, rather than specifically for the identifier. So that probably needs some more attention itself in another PR