Support for passing CLI arguments to the scene constructor

[SscSPs]

Description of proposed feature

So I'm trying to create some videos with some simple animations and do it with different variable data from a file and for that, I am thinking about running manim from another program(cli call) that will provide the extra data to the manim cli as as params and i can read that data in the scene and use it for rendering/calculations.

I tried to find something similar in the config documentation, but i couldn't find anything for that, may be I missed something

How can the new feature be used?

A cli arg, that can pass in the params in whichever way, one that comes to my mind:

manim -p -ql main.py --args "key=value" 

and this will be repeatable arg, so

manim -p -ql main.py --args "key=value" --args "key2=value2"

and then this can be passed into the constructor as a list, or be present in a global scope

Additional comments

Right now, as a work around, I'm having to write my params to a file and then read that file in the constructor, but this will simplify it, and also make it concurrent, now i just have to wait for one to render and the trigger next one because my file name is constant.
May be what I'm trying to achieve can be done with whats already available, so let me know if i missed something, it'll be much appreciated!

[AR4152]

Can I be assigned to work on this please?

[MrDiver]

You can just do this manually by using tempconfig and manually calling the render method on an instantiation of thr Scene.

So if your scene is called Test

Just do

with tempconfig({}):
    Test(args).render()

And then instead of calling manim you just execute the python file as usual

Hope that helps