[Feature] Using Graph type and Force layout provide a way to stop auto layout

### What problem does this feature solve?

When using type `graph` with layout `force` it provides a `draggable` option, but this option is pretty useless since whenever a node is dragged it immediately jumps back to the original place.
Expected behavior, to let the user drag and "reorder" the layout.

### What does the proposed API look like?

Extend the [`force`](https://echarts.apache.org/en/option.html#series-graph.force) configuration with "maxTime" that will stop auto layout after this time. Will also be very helpful to stop very long initial layout in large graphs.