feat: backup/restore

[07CalC]

proposal

currently we don't have any way to backup the current state of mist, and restore is somewhere else let's say another server, its an important feature for migration from one server to another.

requirements

• give one zipped file bak.mist or something that contains the mist.db, current config files traefik-dynamic.yml, traefik-static.yml, logs and a file containing steps to recreate to the current state. via mist-cli and dashboard.

• add a method in mist-cli which will unzip this backup file, move the config files, logs to their destination, and repeat the steps to return to the backup state