Kshitij Sisodia authored Aug 18, 2022 and Nina Drozd committed Aug 25, 2022

Documentation md files added under source tree with links to
the main docs. Minor updates to FAQs for MLECO-3251 as well.

Change-Id: Ifdcc587f2fcf77228fd46e211d3f9c3963bc9b97
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>