[confighttp]: add an option to add span prefix

[VihasMakwana]

Description

This PR adds a new server option to modify span prefix.
it also updates otlpreceiver to use the option.

Link to tracking issue

Fixes #9382

Testing

Added.

---

component.ID is not available in this section of code. Since ToServer is intended to be general and can be used by extensions, receivers, and exporters, modifying it to accept internal.Settings would introduce a breaking change, which I'm not comfortable with. Therefore, I believe it would be better to provide an option to change the prefix instead.

[codecov]

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 91.80%. Comparing base (0c7d347) to head (c871eaf).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
receiver/otlpreceiver/otlp.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11230      +/-   ##
==========================================
- Coverage   91.81%   91.80%   -0.01%     
==========================================
  Files         424      424              
  Lines       20088    20098      +10     
==========================================
+ Hits        18443    18451       +8     
- Misses       1267     1268       +1     
- Partials      378      379       +1     

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[VihasMakwana]

@bogdandrutu @open-telemetry/collector-approvers I'd appreciate your review on this!