Add name option globally across all resources, like private_subnet_names and not via tags

[eylon-commit]

For example, I want to change the different route table names individually.

By default, the module creates 2 private route tables, one per subnet.

I can use the "private_route_table_tags" and modify the Name tag, but this will change the name to be the same for both.

I would want the option to rename each route table individually, to have an option just like the "default_route_table_name option" or "private_subnet_names" (using the
same logic to configure both of them individually with a list(string)). It's possible to implement this in the same way.

This is also relevant for NAT Gateways, other route table types, etc.