feat: Pagination and other components

After #3 it should be trivial to implement pagination (both in message and in reply markup) on top of menus. We should consider adding this to the menu plugin.

We could also look into more complex things like a date or a time picker, a calendar entry, radio buttons, check boxes, etc. This would rather go into the direction of `grammy-inline-menu` which is not a goal of this pluign.

Instead, it may make sense to provide a second plugin that has a wealth of useful UI components, and that depends on the menu plugin.