[TT-16321]: Add configurable BatchSpanProcessor settings

[imogenkraak]

Description

This PR adds configurable BatchSpanProcessor settings.

Related Issue

TT-16321

Motivation and Context

Test Coverage For This Change

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Refactoring or add test (improvements in base code or adds test coverage to functionality)
• Documentation updates or improvements.

Checklist

• I have reviewed the guidelines for contributing to this repository.
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• My change requires a change to the documentation.
  • I have manually updated the README(s)/documentation accordingly.
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• I have updated the documentation accordingly.
• Modules and vendor dependencies have been updated; run go mod tidy && go mod vendor
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• I have added tests to cover my changes.
• All new and existing tests passed.
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  • gofmt -s -w .
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