add support automatic mapping generation for child classes

[alirezanet]

Discussed in #123

^{Originally posted by k94ll13nn3 October 5, 2023}
Hello,

First thanks for this project, it is really useful.

I would like to be able to use the automatic generation of mapping (from the FixMapper method I saw in the repo) when using the Gridify method with custom maps added for some properties.

Using the sample from the documentation, I would like to be able to do this withtout specifiyng Contact.PhoneNumber. If I don't use a custom mapper, the mapping on Contact.PhoneNumber works, but if I use a custom mapper without Contact.PhoneNumber, it does not work anymore (in the sample I could use Contact.Address but my use cases are not as straighforward).

var mapper = new GridifyMapper<Person>()
            .GenerateMappings()
            .AddMap("address", p => p.Contact.Address)
            .AddMap("Contact.PhoneNumber", p => p.Contact.PhoneNumber); // I would like to remove this

Is it possible for now without having to respecify all possible mapping for basic parent.child properties ?

[alirezanet]

this feature has been added to v2.11.1.