Feature: #83556 - Add toggle switches to FormEngine

See Issue #83556

Description

In order to give FormEngine a fresher look we add the following renderTypes to type=check.

renderType checkboxToggle

A pure toggle switch. No additional configuration is necessary.

Its state can be inverted via invertStateDisplay.

renderType checkboxLabeledToggle

A toggle switch where both states can be labelled (ON/OFF, Visible / Hidden or alike).

Its state can be inverted via invertStateDisplay

'items' => [
   [
      0 => 'foo',
      1 => '',
      'labelChecked' => 'Enabled',
      'labelUnchecked' => 'Disabled',
      'invertStateDisplay' => false
   ]
]

renderType default

A toggle that toggles between two icon identifiers.

By default the toggle icons are visually designed to mimic a checkbox.

Its state can be inverted via invertStateDisplay.

'items' => [
   [
      0 => 'foo',
      1 => '',
      'iconIdentifierChecked' => 'styleguide-icon-toggle-checked',
      'iconIdentifierUnchecked' => 'styleguide-icon-toggle-checked',
      'invertStateDisplay' => false
   ]
]