MethodName: Add an option to ignore fields with the `override` keyword

[EliteMasterEric]

If the superclass being extended uses a method name which does not confirm with the project-wide rule, using an invalid name cannot be avoided. There should be an option to disable MethodName, or change the rules for it on override methods.

This could be done with a parameter like ignoreExtern or with a token like OVERRIDE and NOTOVERRIDE.