We create a new landing page for PyTorch custom ops (suggested by
jansel). All of our error messages will link here, and I'll work with
the docs team to see if we can boost SEO for this page.
NB: the landing page links some non-searchable webpages. Two of those
(the Python custom ops tutorial and C++ custom ops tutorial) will turn
into actual webpages when PyTorch 2.4 comes around. I'll make the third one
(the Custom Operators Manual) once it stabilizes (we continously add new
things to it and the length means that we might want to create a custom
website for it to make the presentation more ingestable).
Test Plan:
- view docs preview.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/127400
Approved by: https://github.com/jansel
ghstack dependencies: #127291, #127292
