[ADD] web_refresher_auto: automatically refresh views on interval

[miikanissi]

This is a new module which extends the existing web_refresher module. The purpose of this module is to add an automatic refresh functionality to views based off an interval.

Views which support the refresher will now have an additional toggle button:

Turning this toggle on will enable the automatic refresh. This toggle state is stored in the browsers cache to ensure it stays active when navigating around to other views.

The default refresh interval for the toggle is 60 seconds. This value can be customized by setting a system parameter web_refresher_auto.interval_time_seconds to an integer representing seconds.

This module causes a higher likelihood of the following bug to happen. It is advised that this fix is first merged: https://github.com/OCA/web/pull/3086