💡 Accepted changes for expressions in docs

[AyhamAl-Ali]

This is a useful information to be added in the docs is to know what are the accepted changes you can do for each expression.

Example

Accepted Changes is a bit too long, could someone suggest a shorter name :)

I will try to push a PR for that as soon as I can.

[TPGamesNL]

A shorter name could be Change modes

[Fusezion]

Changers seems like a better name than Accepted Changes or Change Modes

[APickledWalrus]

I think this would best be achieved through an annotation. There are factors that influence what changers are available so I don't think we would be able to accurately "predict" them (hence my suggestion for an annotation).

[AyhamAl-Ali]

I had attempted to implement this before but there wasn't an easy way to do it without Reflrections therefore either add it using Annotations or by adding a new method such as acceptedChangers to return all accepted changers