optional scope attribute for tracer creation

[soumyadeepm04]

Description

Fixes part of #2940

Type of change

Please delete options that are not relevant.

• 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 not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• unit test added for sdk change

Does This PR Require a Contrib Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[emdneto]

This needs a changelog entry, and I think it's better to wait for #4015 since it's the PR which is introducing the attributes to InstrumentationScope

[xrmx]

Converted to draft, please make it ready once #4015 has been merged