'Use explicit types' refactoring for GetProperty

[jnm2]

Changes GetProperty(name, flags) to GetProperty(name, flags, null, returnType, parameterTypes, null).

In practice it's usually Type.EmptyTypes for parameterTypes but default and/or named indexers can exist and overload.

Not sure if this should be warn, info or hidden by default, but I'd probably bump it up to info or warn when using it myself.