fluent-api

On a general level I am not an expert in NHibernate or FluentNHibernate. I need your help to collect all the improvements and bugs that have been lost in the past and are relevant, and the following NHibernate improvements.

We can just break down everything in Features, Improvements and Bugs. If a new idea or bug just open a issue, if not leave here the reference to the issue or PR (example: #1

Feature description

• French translation for the default Validot's message set.
• Placeholders support where applicable.
• Fluent api extension method to ValidatorSettings so it can be nicely used from Validator.Factory.Create.

Feature in action

var validator = Validator.Factory.Create(
    specification,
    s => s.WithFrenchTranslation()
);

validator.Settin