adding a path and handler for the oauth authorization code flow so th…

[john-arccos]

…at if you want to use the authorization code flow by adding in custom security definitions, you can

[john-arccos]

Here's a sample swaggerFile I'm using to utilize this. Also here's a demo video (terminal window is there to hide the client id)

https://user-images.githubusercontent.com/75625191/201396178-dfde4ff5-bf57-4dc0-9989-8e3893e13f57.mov

[john-arccos]

Apologies, not quite ready for review yet