[Feature] add event filter `type: 'region'` and `type: 'region-outside'`

[xile611]

What problem does this feature solve?

1. 能够监听region内的事件
2. 能够监听非region区域的事件

What does the proposed API look like?

vchart.on('click', { level: 'model', type: 'region' },  (e) => { });
vchart.on('click', { level: 'model', type: 'region-outside' },  (e) => { });