feat: add telemetry logs

[dmehala]

Description

Add support telemetry logs

Note to reviewers

This PR only adds the API for collecting and reporting logs. As of now, the library is not yet reporting logs because I am planning to refactor the whole telemetry module and error handling.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 26.66667% with 22 lines in your changes missing coverage. Please review.

Project coverage is 93.16%. Comparing base (f3ebccc) to head (736590f).

Files with missing lines	Patch %	Lines
src/datadog/tracer_telemetry.cpp	8.33%	22 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #185      +/-   ##
==========================================
- Coverage   93.60%   93.16%   -0.45%     
==========================================
  Files          73       73              
  Lines        4256     4286      +30     
==========================================
+ Hits         3984     3993       +9     
- Misses        272      293      +21     

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[dubloom]

LGTM overall. Don't we want to add a test for logs payload as well ? Maybe you want to do it after the refactoring. I could get that.

[dubloom]

Don't we have private headers ? If yes, is there a reason to put the file in the public headers and say do not use ?

[dmehala]

Imagine I am implementing appsec, how Datadog user/integrator outside of the tracer could use it if it's private?

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-02-15 13:41:10

Comparing candidate commit 736590f in PR branch dmehala/telemetry-logs with baseline commit f3ebccc in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics.