feat: ✨ Supports echarts

[haydenull]

No description provided.

[haydenull]

Support for displaying charts using echarts.

Example:

```echarts
{"tooltip":{"trigger":"item"},"legend":{"top":"5%","left":"center"},"series":[{"name":"Access From","type":"pie","radius":["40%","70%"],"avoidLabelOverlap":false,"itemStyle":{"borderRadius":10,"borderColor":"#fff","borderWidth":2},"label":{"show":false,"position":"center"},"emphasis":{"label":{"show":true,"fontSize":40,"fontWeight":"bold"}},"labelLine":{"show":false},"data":[{"value":1048,"name":"Search Engine"},{"value":735,"name":"Direct"},{"value":580,"name":"Email"},{"value":484,"name":"Union Ads"},{"value":300,"name":"Video Ads"}]}]}
```

[sinjab]

I enabled the plugin then copied/pasted your echarts example into a logseq block but no chart appeared, just normal code block.