update manager methods

[imrn99]

Description

Associated issue: closes #233

Content description: TODO

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 66.66667% with 4 lines in your changes missing coverage. Please review.

Project coverage is 79.17%. Comparing base (6302125) to head (7d2ae9a).

Files with missing lines	Patch %	Lines
honeycomb-core/src/attributes/manager.rs	66.66%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #239      +/-   ##
==========================================
+ Coverage   78.97%   79.17%   +0.20%     
==========================================
  Files          52       52              
  Lines        6834     6820      -14     
==========================================
+ Hits         5397     5400       +3     
+ Misses       1437     1420      -17     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[imrn99]

I'll be waiting on API validation to complete this. If we remove some methods (e.g. just keep try variants), I'll ensure there's no more nested Result/Option

[imrn99]

closing in favor of other PRs (e.g. #247)