* [simu] Reduce width of all simulator windows and also height of Horus window. (https://github.com/opentx/opentx/issues/3135)
* [simu] New vertical channel outputs layout for all simulators, all outputs in one window and horizontally scrollable. Consolidate outputs and gvars widgets to one code base for all sims. Make simulator dialog re-sizable.
* [simu] Make simulation dialog resizable, and greatly reduce minimum size requirements of all simulators. Introduces new VirtualJoystickWidget class with all controls. Simplifies every simulator dialog UI form.
