Gin Extend "Any" to register routes that match HTTP Methods for Distributed Authoring(WEBDAV)

Description

Hey 👋 , Based on this comment, I understand why Router Groups do not include additional helper functions for "Non-standard" HTTP methods! However, I was wondering if the routerGroup.Any() shortcut could be extended to cater for more HTTP methods. I think it would be appropriate as the first thing that comes to mind on seeing the routerGroup.Any() helper is that it registers ANY route that matches all the HTTP methods

Comment From: zihengCat

@Ghvstcode For now, routerGroup.Any() register all standard HTTP methods (defined in RFC 7231 section 4.3): - GET - POST - PUT - PATCH - HEAD - OPTIONS - DELETE - CONNECT - TRACE

If user want to register more HTTP methods, such as non-standard or custom methods, they could use router.Handle() API.

router.Handle("LINK", "/path", handler)

https://www.iana.org/assignments/http-methods/http-methods.xhtml