Feature request: allow put own attributes on the resultant input.

[maxalmonte14]

I'm using this great plugin in my project, the issue appears when I try to validate the vue-select for not allow send a form with the vue-select empty, was not possible, because I tried to put some attributes in the vue-select but when renders that attributes are into the resultant div, not the input. I think would be a great feature allow custom attributes on the component because that way developers will can validate the vue-select, add classes and styles, use data attributes for some tricky reason, etc.

Thanks for the great job!

[sagalbot]

Agreed, this is important for accessibility and validation as well. If you need validation support, I have an example here:

https://codepen.io/sagalbot/pen/zZQJKW?editors=1100

[sagalbot]

#762