Allow for Starting Daemon Through TUI.

[ElphaTech]

Is your feature request related to a problem? Please describe.
Would be useful to users who only want to interact with TUI and not have to run multiple files.

Describe the solution you'd like

• Add a flag for starting the daemon on the flags page of the TUI. (Flags in TUI #22)
• The daemon should immediately delete all start.flag files to stop more daemons being created.

Additional context
This depends on issue #4 .