Description:
- Added systemctl status to check service state.
- Added systemctl start, stop, restart actions.
- Added systemctl cat to show System-unit configuration.

Description:
- Added docker useful commands.
Docker commands:
* ls
* clean
* stop
* rm
* up

All documentation available with command:
'meme admin docker'.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Description:
- Fixed interactive sessions.
- Added timeouts.
- All ssh stuff rewritten with asyncssh.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Description:
- Removed redundant ssh command.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Description:
- Added update notification logic.
- Bumped up version.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Description:
- Added debug mode in development;
- Added info command to show version info;
- Added debug messages for every command;
- Fixed CI deployment script;
- Added environment setting.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Signed-off-by: Pavel Kirilin <win10@list.ru>

Signed-off-by: Pavel Kirilin <win10@list.ru>

Signed-off-by: Pavel Kirilin <win10@list.ru>

Signed-off-by: Pavel Kirilin <win10@list.ru>