[FEA] `raft-ann-bench` make the Python CLI look nicer with Typer

[fy]

Describe the solution you'd like

We could consider replacing the argparse with typer, which offers a more modern and refined look.

typer has many advantages over argparse, including

• better code organization
• auto-generated help messages from docstrings
• pytest integration

Describe alternatives you've considered

https://typer.tiangolo.com/alternatives/