Add logs scraper in scraperhelper

[sincejune]

Description

This PR:
(1) added logs scraper in scraperhelper
(2) introduced new metrics for scraping logs.
(3) added alias for legacy type and function names.

Link to tracking issue

Relates to #11238

Testing

Added

Documentation

API changes only. Backward compatible.

[codecov]

Codecov Report

Attention: Patch coverage is 89.08046% with 19 lines in your changes missing coverage. Please review.

Project coverage is 91.60%. Comparing base (ffcef93) to head (f2ca441).

Files with missing lines	Patch %	Lines
receiver/scraperhelper/logs_scrapercontroller.go	91.00%	6 Missing and 3 partials ⚠️
component/componenttest/otelchecker.go	0.00%	5 Missing ⚠️
receiver/scraperhelper/obs_logs.go	93.18%	2 Missing and 1 partial ⚠️
component/componenttest/obsreporttest.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11899      +/-   ##
==========================================
- Coverage   91.62%   91.60%   -0.03%     
==========================================
  Files         447      449       +2     
  Lines       23739    23902     +163     
==========================================
+ Hits        21751    21895     +144     
- Misses       1613     1628      +15     
- Partials      375      379       +4     

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