squeeze: allow squeezing multiple dimensions at once (#89017)
Ref #70924
This addresses part 1 of the issue, allowing `torch.squeeze` to be
passed a tuple of dimensions. e.g.
```python
x.squeeze(0).squeeze(0)
```
can now be written
```python
x.squeeze((0, 1))
```
(assuming x has at least 2 dimensions)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89017
Approved by: https://github.com/albanD
