Moving new feature suggestions from Issues to Discussions

[behackl]

As a few of you might have noticed many issues were closed down and moved to the Discussion section. This decision was made to improve the seperation of suggestions and actual bugs and thought out features that can directly be worked on by devs. This change should help new and old devs to reduce friction in the development of manim.

We now also have a project board where you can see what is currently being worked on!

Any suggestions that you want to make shall now be opened in the "Suggestions and Proposals" category in the discussion tab!

Greetings,
the Core Dev Team