Rename profiler/ directory to profilers/

[daniellepintz]

Proposed refactor

Rename profiler/ directory to profilers/

Motivation

The other directory names are plural, like callbacks/, strategies/, accelerators/- let's do the same for profilers. Part of #11908

cc @Borda @justusschock @awaelchli @rohitgr7 @carmocca @kaushikb11 @ninginthecloud

[Pragyanstha]

Hi ! I would love to work on this issue if it is available

[daniellepintz]

Awesome, thanks! Assigned you the issue

[Pragyanstha]

@daniellepintz
I have a question.
From what I understand, since this change would be backward incompatible, what is the recommended way to give deprecated warning for pytorch_lightning.profiler API ?

[akihironitta]

Hi @Pragyanstha, it'll look almost the same as pytorch_lightning.plugins.training_type.* (which reroutes to pytorch_lightning.strategies.*).

https://github.com/PyTorchLightning/pytorch-lightning/blob/6bc0e1da6329c42ec3b7c6fbf91eb059b9124207/pytorch_lightning/plugins/training_type/ddp.py#L18-L23

[Pragyanstha]

@akihironitta
Ah I see, so we keep the profiler directory and do the same. Thanks !

[bonysureliya]

Hello i would love to work on the issue.