Implement keyper backup script

[ylembachar]

Provide keypers with a script to generate a full export of their keypers

[blockchainluffy]

Approach:

• Creating a backup script to copy shuttermint and keyper data, config files for both keyper and shuttermint. Basically copying and compressing /data and /config directories and .env file.
• Create a revert script to uncompress them back.