Finish adding the "Name:Type" capability to procedures and the new Function model type

When I'm modeling new relational models and creating columns, I can type the name of the column like "CoolColumnName:string(10)" and I not only get the column, I also get that its a String with a length of 10 characters.

If I do that to a new Function model I get a column with the awkward name of "CoolColumnName:string(10)". Not valid!

Please extend this valuable capability to other model type where applicable.