Add ProtocolSucceeded to event

[kylehuntsman]

Adds a ProtocolSucceeded property to the event for knowing which protocol was used for a successful request.

Notable Changes:

• Updates events.RetrievalEventSuccess to have a protocol property that describes the protocol used for the successful retrieval.

References #247

[hannahhoward]

LGTM

[codecov-commenter]

Codecov Report

Merging #252 (e7bdb6f) into main (9292479) will increase coverage by 1.40%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #252      +/-   ##
==========================================
+ Coverage   70.10%   71.51%   +1.40%     
==========================================
  Files          66       71       +5     
  Lines        5861     6330     +469     
==========================================
+ Hits         4109     4527     +418     
- Misses       1512     1551      +39     
- Partials      240      252      +12     

Impacted Files	Coverage Δ
...g/aggregateeventrecorder/aggregateeventrecorder.go	89.56% <100.00%> (+0.35%)	⬆️
pkg/events/events.go	98.92% <100.00%> (+0.01%)	⬆️
pkg/retriever/bitswapretriever.go	93.57% <100.00%> (+0.02%)	⬆️
pkg/retriever/parallelpeerretriever.go	95.07% <100.00%> (+0.02%)	⬆️

... and 18 files with indirect coverage changes