[Feature] 增加主题色功能

[xiaochong444]

What problem does this feature solve?

因为颜色配置的项目比较多，配置起来比较繁琐，希望增加s2的主题色功能，提供根据主色自动生成色板功能 类似s2下面这样 https://s2.antv.antgroup.com/examples/theme/custom/#custom-generate-palette

What does the proposed API look like?

类似s2提供根据主色自动生成色板的函数