Add example code to set up logging

[Joannis]

Includes other unmerged PRs

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 245 lines in your changes missing coverage. Please review.

Project coverage is 88.12%. Comparing base (203246e) to head (863f483).

Files	Patch %	Lines
...es/OTLPGRPC/Logging/OTLPGRPCLogEntryExporter.swift	0.00%	85 Missing ⚠️
...Processing/Batch/OTelBatchLogRecordProcessor.swift	0.00%	62 Missing ⚠️
...ogging/OTLPGRPCLogEntryExporterConfiguration.swift	0.00%	29 Missing ⚠️
...atch/OTelBatchLogEntryProcessorConfiguration.swift	0.00%	29 Missing ⚠️
...ng/Processing/OTelMultiplexLogEntryProcessor.swift	0.00%	24 Missing ⚠️
...gging/Processing/OTelSimpleLogEntryProcessor.swift	0.00%	15 Missing ⚠️
...OTel/Logging/Exporting/OTelLogRecordExporter.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #118       +/-   ##
===========================================
- Coverage   98.99%   88.12%   -10.88%     
===========================================
  Files          69       76        +7     
  Lines        1986     2231      +245     
===========================================
  Hits         1966     1966               
- Misses         20      265      +245     

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