Quasar: QScrollArea support Y and X scrollbar at the same time

[SnosMe]

Is your feature request related to a problem? Please describe.
QScrollArea currently has an exclusive mode for displaying scrollbar horizontally or vertically. Components like a "text file editor" require both scrollbars to be shown.

Describe the solution you'd like
QScrollArea shows vertical and horizontal scrollbar at the same time.

Describe alternatives you've considered
None

Additional context
The only issue I see is how to handle scrollbars overlapping in corner.

• Y scrollbar = container height, X scrollbar = container width - Y scrollbar width (like vscode does)
• Mimic default scrollbars and add a styleable resize square
• ...

[rstoenescu]

This is scheduled for Quasar 2.0.
We cannot add this without introducing breaking changes to the current API.