Improve Form components

[FabienEssid]

We would like to improve our form components to have a better development experience and to optimize the code.
I think we could do some research for those things :

• [ ] Create a "sub" v-text-field component for example which take a prop to remove the following lines :

@input="$v.scope.field.$touch()"
@blur=$v.scope.field.$touch()"

• [ ] Create a mixin to put some code inside it and to remove this code in components. For example :

• requiredErrors method
• isValidForm, a new method to remove the following lines in onSubmit methods :

this.$v.$touch();
if (this.$v.$invalid) return;