Allow to specify type for `Automap` as `Type` argument

[llRandom]

Describe the feature:
Allow to specify type for Automap as Type argument. Currently it's only possible as a generic parameter:

client.Map<MyType>(map => map.AutoMap());

It would be great to support something like this:

client.Map<object>(map => map.AutoMap(typeof(MyType)));

[russcam]

@llRandom what's the use case here? How do you see this being used?

[llRandom]

I often need to define an array of types supported by index, for example, for ConcreteTypeSelector, or list of types for search. But I can't iterate through it do define mapping, so I have to duplicate it for Automap calls.