New feature ideas are best discussed on a specific issue. Please include as much information as you can, any accompanying data, and your proposed solution. The PyTorch team and community frequently reviews new issues and comments where they think they can help. If you feel confident in your solution, go ahead and implement it.

This is from the official guide 5.
I am sure you also checked the CONTRIBUTING document 5.
In there is the procedure explained by @AlbanD .