allow configuration of throttling rate and time unit

[the-clam]

New PR; accidentally discarded the commits for the branch used for the old PR: #7540

modified OtlpConfigUtil.java to take in:

otel.exporter.otlp.lograte
otel.exporter.otlp.throttledlograte
otel.exporter.otlp.logtimeunit

and configure the necessary values to set the log rate and throttled log rate for ThrottlingLogger.Java

[codecov]

Codecov Report

❌ Patch coverage is 89.01099% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.99%. Comparing base (b2c476c) to head (40718db).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...telemetry/exporter/internal/grpc/GrpcExporter.java	28.57%	5 Missing ⚠️
...telemetry/exporter/internal/http/HttpExporter.java	28.57%	5 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #7562      +/-   ##
============================================
- Coverage     90.02%   89.99%   -0.03%     
- Complexity     7080     7097      +17     
============================================
  Files           803      803              
  Lines         21417    21500      +83     
  Branches       2086     2087       +1     
============================================
+ Hits          19280    19349      +69     
- Misses         1475     1489      +14     
  Partials        662      662              

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[fmhwong]

Since the new configurations are for logs, would it be better under otel.exporter.otlp.logs.*?

[the-clam]

Since the new configurations are for logs, would it be better under otel.exporter.otlp.logs.*?

Will wait for the others to get back to me before I make changes for that, comments were left in an older PR that wasn't working properly: #7540 (comment)