[geneva] Add missing XML docs for public APIs

[CodeBlanch]

Changes

• Enable CS1591 in GenevaExporter and add missing XML docs for public APIs.

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.51%. Comparing base (71655ce) to head (9d5deb9).
Report is 405 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2044      +/-   ##
==========================================
- Coverage   73.91%   72.51%   -1.40%     
==========================================
  Files         267      315      +48     
  Lines        9615    12216    +2601     
==========================================
+ Hits         7107     8859    +1752     
- Misses       2508     3357     +849     

Flag	Coverage Δ
unittests-Exporter.Geneva	53.20% <ø> (?)
unittests-Exporter.InfluxDB	95.88% <ø> (?)
unittests-Exporter.Instana	71.24% <ø> (?)
unittests-Exporter.OneCollector	94.31% <ø> (?)
unittests-Exporter.Stackdriver	75.73% <ø> (?)
unittests-Extensions	88.57% <ø> (?)
unittests-Extensions.AWS	83.41% <ø> (?)
unittests-Extensions.Enrichment	100.00% <ø> (?)
unittests-Instrumentation.AWS	75.77% <ø> (?)
unittests-Instrumentation.AWSLambda	88.92% <ø> (?)
unittests-Instrumentation.AspNet	76.73% <ø> (?)
unittests-Instrumentation.AspNetCore	85.27% <ø> (?)
unittests-Instrumentation.ElasticsearchClient	79.87% <ø> (?)
unittests-Instrumentation.EntityFrameworkCore	55.49% <ø> (?)
unittests-Instrumentation.EventCounters	76.36% <ø> (?)
unittests-Instrumentation.GrpcNetClient	79.61% <ø> (?)
unittests-Instrumentation.Hangfire	93.58% <ø> (?)
unittests-Instrumentation.Http	82.06% <ø> (?)
unittests-Instrumentation.Owin	85.79% <ø> (?)
unittests-Instrumentation.Process	100.00% <ø> (?)
unittests-Instrumentation.Quartz	78.94% <ø> (?)
unittests-Instrumentation.Runtime	100.00% <ø> (?)
unittests-Instrumentation.SqlClient	90.90% <ø> (?)
unittests-Instrumentation.StackExchangeRedis	67.02% <ø> (?)
unittests-Instrumentation.Wcf	48.91% <ø> (?)
unittests-PersistentStorage	65.78% <ø> (?)
unittests-Resources.AWS	77.93% <ø> (?)
unittests-Resources.Azure	82.35% <ø> (?)
unittests-Resources.Container	72.41% <ø> (?)
unittests-Resources.Gcp	72.54% <ø> (?)
unittests-Resources.Host	73.94% <ø> (?)
unittests-Resources.OperatingSystem	80.00% <ø> (?)
unittests-Resources.Process	100.00% <ø> (?)
unittests-Resources.ProcessRuntime	77.08% <ø> (?)
unittests-Sampler.AWS	87.97% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
....Exporter.Geneva/GenevaExporterHelperExtensions.cs	98.18% <ø> (+30.00%)	⬆️
...Telemetry.Exporter.Geneva/GenevaExporterOptions.cs	90.24% <ø> (+0.24%)	⬆️
...OpenTelemetry.Exporter.Geneva/GenevaLogExporter.cs	57.50% <ø> (-20.00%)	⬇️
...lemetry.Exporter.Geneva/GenevaLoggingExtensions.cs	95.08% <ø> (+9.36%)	⬆️
...enTelemetry.Exporter.Geneva/GenevaTraceExporter.cs	52.50% <ø> (-22.50%)	⬇️
...ry.Exporter.Geneva/Metrics/GenevaMetricExporter.cs	76.47% <ø> (+9.80%)	⬆️
...r.Geneva/Metrics/GenevaMetricExporterExtensions.cs	93.33% <ø> (ø)
...rter.Geneva/Metrics/GenevaMetricExporterOptions.cs	100.00% <ø> (ø)

... and 337 files with indirect coverage changes