WIP: Preparing the codebase, nothing important

Signed-off-by: Nikolai Rodionov <allanger@badhouseplants.net>

lib/src/project.rs

@@ -0,0 +1,7 @@
+use crate::{region::Region, track::Track};
+
+pub(crate) struct Project {
+    name: String,
+    tracks: Vec<Track>,
+    regions: Vec<Region>,
+}