Touchscreen Friendly Options for Dashboard Widgets

### Description

It would be really nice if widgets such as ui-number-input had a touchscreen friendly option where the up/down buttons were on each side of the input field to create physical seperation to make it much easier to use on a touch screen. Also, widgets such as the drop-down are also not very touch friendly and basically require a mouse to use and scroll through options. Touch friendly options for the various widgets in FlowFuse Dashbaord would make it much more well suited and flexible for HMIs used for industrial controls.

### Have you provided an initial effort estimate for this issue?

I am no FlowFuse team member

Start by locating the ui-number-input and drop-down widget implementations in FlowFuse Dashboard and reviewing their current touch interactions. Define which widgets need touch-friendly options and how the controls should behave on HMIs; done means the agreed widget set can be operated comfortably without a mouse.

Written by the indexing model from the issue text.