Support concat alias to cat #61767
Description
🚀 Feature
Support torch.concat.
Motivation & Pitch
Python Array API proposes the use of concat among other manipulation functions. Currently, PyTorch supports the same functionality with torch.cat. As listed in #58742, it would be nice to add an alias concat to cat making it compliant with Array API.
Additional context
cc @mruberry @rgommers @pmeier @asmeurer @leofang @AnirudhDagar @asi1024 @emcastillo @kmaehashi @heitorschueroff