Victor Toso authored Jul 24, 2020 and Victor Toso committed Mar 29, 2021

Help is meant to be a set of examples to application developers who
are interested in using grilo-plugins in their applications.

This patch addes a build option to not build and install those files
files (only one, using TMDB, but it installs it once per LINGUAS/* at
least. This is not needed in a sandboxed application like Flatpak

Closes: #13