Add WithTracerProvider() func to httptrace package

[erichsueh3]

Description:
This PR adds the WithTracerProvider() function to the httptrace package. This is done in clienttrace.go.

Link to tracking Issue:
#1105

[codecov]

Codecov Report

Merging #1128 (2aee336) into main (1412a89) will decrease coverage by 0.0%.
The diff coverage is 44.4%.

@@           Coverage Diff           @@
##            main   #1128     +/-   ##
=======================================
- Coverage   68.2%   68.2%   -0.1%     
=======================================
  Files        119     119             
  Lines       5205    5211      +6     
=======================================
+ Hits        3555    3556      +1     
- Misses      1511    1516      +5     
  Partials     139     139             

Impacted Files	Coverage Δ
...on/net/http/httptrace/otelhttptrace/clienttrace.go	76.0% <44.4%> (-1.6%)	⬇️

[pellared]

I think it may be good to update CHANGELOG.md

[erichsueh3]

Would a test for the WithTracerProvider() function be necessary? Not sure how much value it adds due to the simplicity of the function.

Asked this on the linked issue, but reposting here for more visibility.