Figure label auto-positioning

This is a customer requested feature. In both R and MatPlotLib there are extensions which allow figure labels to auto-position for readability by preventing overlap. See gif below.

It is possible to acheive this effect in MatPlotLib and R

At least one customer has requested, and it's a feature which is not possible for a client to easily implement by themeselves. Current label positioning options are not dynamic in this way, and as a result we don't see a lot of client figures using labels, especially when there are more than a few points on the figure. Most clients default to hover, but that isn't viable for everyone, especially in settings where apps are being viewed on different devices. It's potentially also an accessibility improvement.

该 issue 未指明文件、测试或入口点。首先查看现有的标签定位选项，以及所引用的 adjustText 和 ggrepel 示例。完成的标准是提供动态标签放置功能，防止图之间发生重叠，并且在不同设备上仍然可用。