[VUE 3] Kebab-case names for Vue wrappers

[SergeyMaltsev]

Forum post

• Update wrappers to use kebab case convention for vue events/features.
• Update guides

Stated here:
https://vuejs.org/guide/components/events.html#emitting-and-listening-to-events

Currently these supported:

Using onFunctions:

<bryntum-calendar
    ref="calendar"
    v-bind="calendarConfig"
    :onBeforeDragMoveEnd="handleBeforeDragMoveEnd"
    :onDragMoveEnd="handleDragMoveEnd"
/>

Using events with camelCase:

<bryntum-calendar
    ref="calendar"
    v-bind="calendarConfig"
    @beforeDragMoveEnd="handleBeforeDragMoveEnd"
    @dragMoveEnd="handleDragMoveEnd"
/>

TODO

Support this

<bryntum-calendar
    ref="calendar"
    v-bind="calendarConfig"
    @before-event-resize="handleBeforeEventResize"
    @before-drag-move-end="handleBeforeDragMoveEnd"
/>

[jsakalos]

We need to support kebab names for ALL configs/props/events because Vue 3 guys strongly recommend that. So on-load in a Vue template has to be transformed to our onLoad config/prop name.