Patch: Restart keyboard from “Utilities” page

This patch adds a new option to the "Utilities" settings page that allows to restart the keyboard.

Note: a pull request is pending on Github to merge this patch upstream.

Sources: https://github.com/ichthyosaurus/sailfish-public-patch-sources

Discussion: https://forum.sailfishos.org/t/patches-by-ichthyosaurus

Donations: https://liberapay.com/ichthyosaurus