feat(core): add ability alter the paths definition received by swagger stats

[shubhamp-sf]

Description

This PR introduced a callback in core config named modifyPathDefinition in order to allow users to modify or even exclude the path from swagger spec received by swagger-stats middleware.

GH-1613

Fixes #1613

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)
• Intermediate change (work in progress)

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

• Tested in and example application: https://github.com/shubhamp-sf/catalog-1613

Checklist:

• Performed a self-review of my own code
• npm test passes on your machine
• New tests added or existing tests modified to cover all changes
• Code conforms with the style guide
• API Documentation in code was updated
• Any dependent changes have been merged and published in downstream modules

[sonarcloud]

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