data: add a .meta file to data directory
data: add a .meta file to data directory

The main purpose of this file is to keep this directory
in the git scm, so that when users clone/install Bastion
and try to start it, they won't get errors when files,
generated when Bastion runs, are being written to the data
directory.

snkrsnkampa/Bastion,snkrsnkampa/Bastion