orb-ns should use the same key locations as orb

[jsantell]

orb key locations are ~/.config/noosphere/keys (on linux at least); orb-ns needs to update to use this dir rather than ~/.noosphere/keys

[cdata]

This directory is chosen here:

noosphere/rust/noosphere-cli/src/native/workspace.rs

Lines 321 to 329 in 5b36b08

	let noosphere_directory = match custom_noosphere_directory {
	Some(path) => path.to_owned(),
	None => {
	// NOTE: Breaking change for key storage location here
	let project_dirs = ProjectDirs::from("network", "subconscious", "noosphere")
	.ok_or_else(|| anyhow!("Unable to determine noosphere config directory"))?;
	project_dirs.config_dir().to_owned()
	}
	};

Platform-specific heuristics described here: https://crates.io/crates/directories