Daemon is now capable of providing version information through the
`--version` cli option.

variables and paths have been updated to the new project name
ADAFS -> GKFS

Get rid of all the occurrences of old project name "adafs" from output
strings and documentation

ADAFS_CWD -> GKFS_CWD

From now on the changelog will adhere to the https://keepachangelog.com/en/1.0.0/ format

get rid of old adafs name from pid file

ADAFS_DEPS_INSTALL variable is deprecated and not used anymore.

All the relevant env variables are now prefixed with GKFS instead of
ADAFS

`adafs_preload_client` -> `gkfs_intercept`

`adafs_daemon` -> `gkfs_daemon`

get rid of adafs name from folder names

Glibc symlink

See merge request !8