lmkd: Add lmkd README file

Add README file providing lmkd overview and description for its
properties.

Bug: 77299493
Bug: 75322373
Change-Id: I30236dd4ccaa2b48c31dfb80b63f0b82b49b5744
Merged-In: I30236dd4ccaa2b48c31dfb80b63f0b82b49b5744
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
(cherry picked from commit 7e5dea82a5a2f86117722ff11c93bc672ffb7903)
1 file changed