Create `restore from backup` functionality

[kiprasmel]

Task

• Create a function which would restore changes from

  • XYZ backup

    • list backups - Create list backups functionality #6
      • select one to restore from

  • latest backup

    • Identify the latest backup (probably by the unix date timestamp we add to the branch name) (create as separate function since it'd be needed for other stuff too)

• implement an option to activate this function

  • think of a good name
  • handle in the script
  • update docs
    • raw
    • manual page

[kiprasmel]

git stash apply. Would be awesome being able to restore from a remote though.