Support server side rendering

[ZeRego]

Now that echarts supports server side rendering , could we support it here as well ? I know we might have limitations specially with canvas but we could support ssr for svg rendering as a first step.

This would help situations where we want to render a larger/complex component that includes the echart component from echarts-for-react.

[hustcc]

Can help to give me a pr?

[ZeRego]

@hustcc Are there any contribution docs? can't find them