feat(oas): include /admin and /store in paths URLs (#3314)

## What

Include `/admin` and `/store` in OAS paths URLs

## Why

Allow for generating a combined OAS that include routes for both "admin" and "store" endpoint.

Fix potential issues with code generator where routes are not prefixed with "admin" and "store" leading to 404 errors.

## Test

* Run `yarn build`
* Run `yarn openapi:generate`
* Run `yarn redocly preview-docs docs/api/admin/openapi.yaml --config=./docs-util/redocly/config.yaml`
* Expect paths to be prefixed with /admin.
* Run `yarn redocly preview-docs docs/api/store/openapi.yaml --config=./docs-util/redocly/config.yaml`
* Expect paths to be prefixed with /store.

packages/medusa/src/api/routes/admin/notes/create-note.ts

@@ -5,7 +5,7 @@ import { validator } from "../../../../utils/validator"
 import { EntityManager } from "typeorm"
 
 /**
- * @oas [post] /notes
+ * @oas [post] /admin/notes
  * operationId: "PostNotes"
  * summary: "Creates a Note"
  * description: "Creates a Note which can be associated with any resource as required."