[NumericTextBox] does not have an inputmode="numeric" attribute or support changing it

[gkarapeev]

The element generated by the NumericTextBox component, does not include an inputmode attribute.

The attribute is useful for mobile views because it can invoke a numerical keyboard and make it easier for the user to interact.

A default value of "numeric" can be added if doesn't introduce any problems. Allowing our users to change it could also be a good option. Other possible values can be seen here.

Reported in support tickets: 1486073, 1493791

[yanmariomenev]

The feature request with the addition of other components is now logged in our Feedback Portal:

https://feedback.telerik.com/kendo-angular-ui/1541664-providing-an-option-to-set-inputmode-in-components-that-use-numeric-input-values