Allow mapping via fluent API

[cremor]

It would be great if this library could also provide fluent mapping APIs to allow mapping of check constraints without using attributes.

Example:
There is no HasMinLength() fluent mapping method. So you have to use a [StringLength(2, MinimumLength = 2)] attribute to get a min length check constraints.

[roji]

@cremor the point of this plugin is to provide support for standard .NET plugins which are already there - [StringLength] is part of .NET. If you just want to specify a minimum length check constraint in EF via the Fluent API, you can simply define the check constraint directly via EF's API (docs).

[cremor]

Yes, but with manually written check constraints I also have to manually do all the work that this library is already doing when I use attributes, like:

• building the constraint name
• using the correct column name
• correctly quoting the column name

I like that this library does all that automatically 😄

[roji]

I'll leave this open in the backlog, but all the above really is trivial stuff - this plugin really was meant for making the built-in .NET attributes work, not making a really simple task even a big simpler :)