Missing xtensor top level functions

[ricardoV94]

Description

Checking https://docs.xarray.dev/en/stable/api.html#top-level-functions

The following (unchecked) top level functions are missing. I filtered out ones that are not relevant for PyTensor

• broadcast
• concat
• where
• full_like
• zeros_like
• ones_like
• cov
• corr
• cross
• dot
  • dot with arbitrary number of inputs