Small main page for describing the content of the documentation, while
splitting and describing the role of both libVLC and libvlccore.
It is ought to be extended later.
Co-authored-by: Simon Latapie <garf@videolabs.io>
There has never been any documentation related to what a MRL actually
is, these changes addresses that by (hopefully) describing the entity
in a way that makes it easier for future developers to treat them
correctly.
Signed-off-by: Thomas Guillem <thomas@gllm.fr>