feature: allow customizing path for state files

[andrevmatos]

Did you check the docs?

• I have read all the snacks.nvim docs

Is your feature request related to a problem? Please describe.

There are a few stdpath("data") hardcoded throughout the code, e.g. for history's path and frecency's store_file.
It'd be nice to have an option to make sure any state file has customizable path, so we can use stdpath("state") if desired, putting those files in ~/.local/state/nvim/[snacks/] by default, and keeping ~/.local/share/nvim clean.

Describe the solution you'd like

Ensure no path is hardcoded, and can be customized.

Describe alternatives you've considered

Overriding $XDG_DATA_HOME can achieve this, but also can mess with any program/command spawned from neovim which depend from it being set to the proper path.
Overrding stdpath itself is possible, but quite hacky.

Additional context

Modern XDG specifications recommend putting "state files" (files which are written at runtime based on user's interactions) in $XDG_STATE_HOME (usually ~/.local/state), leaving $XDG_DATA_HOME for user-owned program files and assets instead.

[folke]

sorry, but I don't see the point. Closing