Improve the "Debug Console" page

[Xayton]

While using the "Debug Console" of the Arduino Agent, a few improvement opportunities were found:

• Save the selection for the "show list commands", so that it will persist page refresh
• Improve the "Enable list command" checkbox to allow 3 different settings:
  • Hide "list" commands: like having the checkbox unchecked
  • Show "list" commands inline: like having the checkbox checked
  • Show "list" commands separately: will show a new section where you see the result of the last "list" command, independently from the other logs
• Fix a regression where the "list" lines where hidden, but the actual content (the part with the board data) was always shown, no matter the checkbox state.