Added the scaffolding

shanty-index/src/lib.rs

@@ -0,0 +1,4 @@
+//! Music file indexing and metadata extraction.
+//!
+//! Scans a directory tree of music files, extracts embedded metadata (ID3, Vorbis
+//! comments, etc.), and stores everything in the Shanty database.

shanty-index/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("shanty-index: music file indexing and metadata extraction");
+}