Improve viewing of structured key-value data in Aria2TUI

[grimandgreedy]

I am not sure of the best way to do this but when we view key-value information it looks a little tacky.

Potential solutions

• The easiest way would be to create a stylised picker
• Create a separate viewer--similar to the form handler Create dedicated form handler #4

I feel as though creating something on top of the picker is somewhat superfluous, however, as the name suggests, a picker is perhaps not the appropriate way to display such information. The form handler is relevant because a lot of the time the key-value information will look much better if displayed in sections.

Current key-value views

• Picker info (i)
• Help (?)
• Main menu
  • Get Session Info
  • Get Global Stats
  • Get Version Info
• Download operations
  • View download information (several)

Notes

If we have a separate info viewer, we can create a macro "I", display download info which will bypass the submenu.