Trait for render() method

[Studiedlist]

It would be handy to have such trait since with current implementation, it is impossible to create generic function, that will render any minijinja or askama template

[rdbo]

I was doing that before, but the Askama syntax is:

use askama::Template;

In order to use a trait, you'd have to do

use dynja::{Template, TemplateTrait};

So I thought I would remove it. Although I'm also not a big fan to just placing a render function in the struct

[rdbo]

Maybe we could have a trait render function in the TemplateFile trait and also a render function implemented directly in the struct that just calls the one from the trait

[Studiedlist]

I think, it's a good option