[FEAT] Flexible `data` and `chroma` paths

[SAMAD101]

Problem

Currently we have:

• ~/.local/share/chino/data for data path, and
• ~/.local/share/chino/chroma for chroma path ref

Description

We need something more customizable, these chroma and data paths could be set by the user. But that currently requires digging into the code. Which is kinda hassle.

Alternatives

Find a way to do it using the TUI. So, that the user can set their own data and chroma paths.