torch.special.airy_ai (#78902)
```Python
airy_ai(input, *, out=None) -> Tensor
```
Airy function $\text{Ai}\left(\text{input}\right)$.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/78902
Approved by: https://github.com/mruberry, https://github.com/linbinyu, https://github.com/seemethere
