feat(color): LVGLify and enhance Logical Switches page (#3019)

* Update logical switch layout:
- Use LVGL flex / grid layout
- Same height for all buttons
- Display logical switch name inside button so entire row acts as button
- Consistent press handler for buttons (always show popup menu)
- Group buttons for empty switch in lines to utilise space
- Remember selected button and reselect after edit.

* Fix incorrect switch being selected when changing tabs.

* Fix selection of focussed button when using 'Clear', and switching tabs.

* Reorganise logical switch edit code.

* Change button style to match input/mixes/outputs pages.

* Single line overview on landscape LCD layout. Convert to using grid and lgvl objects for overview buttons.

* Remove redundant flag.

* Remove logic that tries to center scroll around selected button (not working).

* Remove empty buttons and add a single '+' button at the bottom to match inputs and mixes.

* Remove unused code.

* Correct string usage.

* Add long press handler for quick access to the '+' button functions.

* Display logical switch operation and parameters as an expression. Add 's' suffix to time values.

* Adjust spacing.

* Set V2 number edit control to automatically resize and fit content to prevent clipping of large values.

* Revert to fixed column layout.

* Adjust grid spacing.

* Convert the logical switch view in the channel monitor to LVGL flex.

* chore: Formatting

Co-authored-by: Phil Mitchell <[email protected]>
Co-authored-by: Peter Feerick <[email protected]>