Added option for responsive offcanvas

[frdij]

Responsive offcanvas was added in Bootstrap v5.2.0 and requires replacing the standard .offcanvas class with a breakpoint specific class.
https://getbootstrap.com/docs/5.3/components/offcanvas/#responsive

This PR adds a new parameter Responsive of type OffcanvasResponsive (enum) to the Offcanvas component. Via this new parameter the desired class will be added similar to how Placement works.

Resolves #849

[frdij]

#849 proposed to suppress the default class and I did see there is already PR #859 which adds EnableDefaultClass parameter however, I think it's much nicer to add a parameter Responsive with enum to specify desired class instead of requiring to both set EnableDefaultClass parameter and adding desired Bootstrap class "manually".