- add new `showRadioButtons` and `showTitle` UI customization points
- adjust SB and expose all the existing modes, fix it to make it work
with multi selection
- integrate these new modes into SwapModal to align it with the Figma
design
Fixes#14780
- new panel created: `SwapInputPanel`
- some cleanups to the needed stores
- created a SB page demonstrating the use of 2 panels and the
`SwapExchangeButton`
- created QML tests
Fixes#14781
Khushboo Mehta
Lukáš Tinkl