Support for strings, dates and pre/post-fixes in :class:NumberLine

[alembcke]

I am building a Manim plugin for finance. One issue that has popped up is that NumberLine, which Axes and ThreeDAxes inherit from, only supports numbers (via the method add_numbers). But I will often need to put strings, dates and currencies on the x, y and z axes. I already plan to make finance-specific charts, such as OHLC and candlestick charts, within the plugin.

So although all of this could be implemented at the plugin level, the question is whether it should be?

I could see this functionality being useful for statistics, at the very least. And while support for currencies would certainly be finance-specific, having support for pre-fixes and post-fixes may be helpful for math and other STEM fields.

So how does the Manim community feel about this sort of thing? What should be in Manim and what should be done at the plugin level?