openapi spec generation improvements #7271
Description
HAPI OpenAPI spec generation could be enhanced to allow users to customize the spec with extensions and other customizations.
My team needs to add custom extensions to the generated openapi spec, so I've put together some changes that will allow us to override the OpenApiInterceptor and customize what gets generated. We're also going to be using this to append more detailed json schema definitions into the spec so developers can quickly see what the FHIR objects look like without jumping out to read the FHIR Docs.
Let me know what you think and if I need to make any adjustments before we can merge. I have been mostly testing with direct integration with my server so far, but I will add more rigorous testing if you agree that this is a useful feature that we can merge.
I have had an open pull request on this for several months that I would like to get reviewed and merged if possible: #6651