feat: can dock the monitor widget to the "right"

Added a new preference (`arduino.monitor.dockPanel`) to specify the
location of the application shell where the _Serial Monitor_ widget
resides. The possible values are `"bottom"` and `"right"`. The default\
value is the `"bottom"`.

The dock panel is per application and not per workspace or window.
However, advanced users can create the `./.vscode/settings.json` and
configure per sketch preference.

Signed-off-by: dankeboy36 <[email protected]>

Author: dankeboy36