feat: support for references (i.e. components)

**Is your feature request related to a problem? Please describe.**
Support json ref parsing capability to take references from different sections of the file.

**Describe the solution you'd like**
https://swagger.io/docs/specification/components/

**Describe alternatives you've considered**
N/A

**Additional context**
N/A

Start by reading the linked Swagger components documentation and the repository's current JSON parsing flow. Determine how references from different sections of an OpenAPI file should be handled, then verify the behavior with representative documents covering components and references.

Written by the indexing model from the issue text.