bitswap: link traces

[dennis-tra]

Changelog:

• added a new span to bitswap's handleIncoming plus received block events
• marked the spans/attributes/events that we at ProbeLab use for our analysis

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.77%. Comparing base (0f1ebac) to head (b59760b).
⚠️ Report is 6 commits behind head on main.

@@            Coverage Diff             @@
##             main    #1053      +/-   ##
==========================================
+ Coverage   60.75%   60.77%   +0.01%     
==========================================
  Files         268      268              
  Lines       33593    33600       +7     
==========================================
+ Hits        20411    20420       +9     
+ Misses      11510    11506       -4     
- Partials     1672     1674       +2     

Files with missing lines	Coverage Δ
bitswap/client/internal/getter/getter.go	83.75% <100.00%> (+1.08%)	⬆️
bitswap/client/internal/session/session.go	89.25% <100.00%> (ø)
bitswap/client/internal/tracing.go	100.00% <100.00%> (ø)
...uting/providerquerymanager/providerquerymanager.go	85.54% <100.00%> (+2.20%)	⬆️

... and 4 files with indirect coverage changes

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[gammazero]

This code seems reasonable, but I am not sure we want to add ProbeLab specific comments to our codebase.

[dennis-tra]

This code seems reasonable, but I am not sure we want to add ProbeLab specific comments to our codebase.

This was suggested by @lidel (not the specific phrasing, just the marks). The rationale was that we wanted to avoid our analysis code to break going forward into the future.