Reduce binary size

[wjones127]

We might want to reduce our binary size so it's easier to install and takes less space in packaging.

Here are some things we can do:

• Move TFrecord utilities into a separate package
• Reduce scope of generics. There's a lot of structs in the lance-index code base that are generic over float type that likely don't need to be.
• Try to reduce number of panics (each panic stores the location and message in the binary)
• Change panic behavior to abort on panic
  • This is probably a bad idea, it would made panics much harder to debug

See: https://github.com/johnthagen/min-sized-rust