Add profiles support to OTLP HTTP exporter

[dmathieu]

Description

This uses the profiles internal packages that were implemented in previous PRs to provide profiles support to the OTLP HTTP exporter.

This PR requires #11226✅ to be merged first.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 8 lines in your changes missing coverage. Please review.

Project coverage is 92.12%. Comparing base (388bae7) to head (ed05199).

Files with missing lines	Patch %	Lines
exporter/otlphttpexporter/factory.go	80.00%	2 Missing and 2 partials ⚠️
exporter/otlphttpexporter/otlp.go	88.88%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11450      +/-   ##
==========================================
- Coverage   92.14%   92.12%   -0.02%     
==========================================
  Files         433      433              
  Lines       20389    20441      +52     
==========================================
+ Hits        18787    18831      +44     
- Misses       1238     1243       +5     
- Partials      364      367       +3     

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

[mx-psi]

I merged #11226 :)

[mx-psi]

LGTM. @open-telemetry/collector-approvers I will merge this on Friday EU morning unless there are comments before then