paths: remove hardcoded basepath

Before we were hardcoding the basepath with dirs, which isn't that
useful for testing, previews, or for android. Let's fix that.

This also moves the db and cache directories into our root DataPaths.
This is a breaking change, we don't have a migration step. sorry.

Signed-off-by: William Casarin <jb55@jb55.com>

src/lib.rs

@@ -46,12 +46,11 @@ mod view_state;
 #[macro_use]
 mod test_utils;
 
-mod storage;
+pub mod storage;
 
 pub use app::Damus;
 pub use error::Error;
 pub use profile::DisplayName;
-pub use storage::DataPaths;
 
 #[cfg(target_os = "android")]
 use winit::platform::android::EventLoopBuilderExtAndroid;