How to properly store a repository on GitHub?

Question

git

Actually the question is in the title. It is clear with simple html, css and js files. But let's say that about the same Visual Studio, in addition to a file with the .cs extension, creates a bunch of others for its work.
Silly question, but still want to hear the answers.

Answer 1

Silly question, but still want to hear the answers.

Regardless of whether you have Visual Studio or some other, in the repository, in the normal scenario, they never save, incl. the following: files that the IDE or whatever automatically generates them; ships also include various "builds" (the result of the work of some assemblers, etc.), everything that can be re-generated on another machine is usually not put into the repository.
In other words, the repository usually stores what is directly related to the source code. That is, for example, some external libraries downloaded by one command, dependencies, etc., are also not saved to the repository, usually .