The Springdoc library is more up to date, can provide OpenAPI V3 specifications and therefore handle the new more complex multipart endpoints for `merge` and `append`.
Migration of all controllers done.
Fix examples (Shows schema currently, not the sample values)
Add default responses other than the ApiResponses
Response headers swallows commas and dashes
Convert metadata from `public Docket api`
Default responses and metadata added, including security scheme.