Display the item info on the right side of the user interface

[marco-sacchi]

NOTE: this implementation requires the management of the focus between the list frame and the info frame (if the info frame can scroll). Before starting development, it may be necessary to complete the TUI library to have consistent UI behavior.

Graphical user interface:

• move the screenshot display and the display of messages to the top right corner
• show the info in frame with scrolling to the bottom right corner.

Text-mode interface:

• replace the logo on the right with a full-height frame with scrolling containing info
• check where messages are currently displayed