adding export retry configuration

[brettmc]

Closes #1317

[brettmc]

This is set to draft, as open-telemetry/opentelemetry-configuration#97 has not been accepted.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 36 lines in your changes missing coverage. Please review.

Project coverage is 74.16%. Comparing base (b6f9afb) to head (4632de4).
Report is 46 commits behind head on main.

Files with missing lines	Patch %	Lines
...K/ComponentProvider/Logs/LogRecordExporterOtlp.php	0.00%	9 Missing ⚠️
...K/ComponentProvider/Metrics/MetricExporterOtlp.php	0.00%	9 Missing ⚠️
...g/SDK/ComponentProvider/Trace/SpanExporterOtlp.php	0.00%	9 Missing ⚠️
...SDK/ComponentProvider/Trace/SpanExporterZipkin.php	0.00%	9 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1341      +/-   ##
============================================
- Coverage     74.54%   74.16%   -0.38%     
  Complexity     2504     2504              
============================================
  Files           355      355              
  Lines          7180     7216      +36     
============================================
  Hits           5352     5352              
- Misses         1828     1864      +36     

Flag	Coverage Δ
8.1	73.93% <0.00%> (-0.35%)	⬇️
8.2	74.11% <0.00%> (-0.38%)	⬇️
8.3	74.11% <0.00%> (-0.40%)	⬇️
8.4	74.14% <0.00%> (-0.39%)	⬇️

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

Files with missing lines	Coverage Δ
...K/ComponentProvider/Logs/LogRecordExporterOtlp.php	0.00% <0.00%> (ø)
...K/ComponentProvider/Metrics/MetricExporterOtlp.php	0.00% <0.00%> (ø)
...g/SDK/ComponentProvider/Trace/SpanExporterOtlp.php	0.00% <0.00%> (ø)
...SDK/ComponentProvider/Trace/SpanExporterZipkin.php	0.00% <0.00%> (ø)

... and 3 files with indirect coverage changes

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[brettmc]

Closing, can be re-opened or re-implemented if/when the spec allows.