TUI is not completed

[andreymlv]

TUI must have:

• Title bar with help navigation and press ? for help
• Footer that contains current state (total disk usage: <size> sorting by: <state>)
• Main frame must have list of entries (<size> <progress bar of relative sizes from biggest file or directory> <entry name>)
• Fancy bytes to human readable sizes
• Sorting entries
• Navigation back and forth trough directories