Add information on performing correct scientific attribution

**Your Godot version:**

Godot 4.4.1-stable, but not really relevant.

**Issue description:**

I've been working on a academic educational chemistry software using Godot. I would like to properly give credits. This is not the main use-case of this software, but I know of some other scientists or content creators who also use Godot for scientific visualizations. The documentation should have a page with a bibtex entry or a recommended way to properly cite Godot in scientific papers.

**URL to the documentation page (if already existing):**

None that I could find, except for maybe the Licence section of
https://github.com/godotengine/godot-docs?tab=readme-ov-file
relevant passage quoted here:

> With the exception of the classes/ folder, all the content of this repository is licensed under the Creative Commons Attribution 3.0 Unported license ([CC BY 3.0](https://creativecommons.org/licenses/by/3.0/)) and is to be attributed to "Juan Linietsky, Ariel Manzur and the Godot community". See [LICENSE.txt](https://github.com/godotengine/godot-docs/blob/master/LICENSE.txt) for details.

I propose something along the lines of
```latex
@misc{godot,
title = {{Godot engine v4.4.1-stable}},
author = {Juan Linietsky and Ariel Manzur and {the Godot community}},
url = {https://godotengine.org/},
year = {2025}
}
```