Add guide for adding gestures to components

With Angular v9, we removed direct gesture handling in Angular Material. We did this for a number of reasons, including:
* Drop dependency on mostly unmaintained HammerJS
* Give people flexibility to use other gesture solutions
* No requirement to add gesture code for users that don't actually want it
* Simplify project setup

However, we should still have a guide that explains how to _add_ gestures for users that want them. The guide should cover topics including:
* Swiping out a sidenav
* Swiping between tabs
* Swiping items away on a list / table
* Swiping calendar months

Related to #2209

Start by reviewing the existing Angular Material documentation structure and the guides for sidenav, tabs, lists or tables, and calendar components. The guide is done when it explains how users can add gestures for swiping a sidenav, switching tabs, dismissing list or table items, and changing calendar months, while accounting for the reasons direct gesture handling was removed.

Written by the indexing model from the issue text.