Add build script for diesel_migrations

Cargo.toml

@@ -3,6 +3,7 @@ name = "libretunes"
 version = "0.1.0"
 authors = ["Ethan Girouard"]
 edition = "2024"
+build = "src/build.rs"
 
 [dependencies]
 diesel = { version = "2.3.10", optional = true, features = [ "postgres" ] }

src/build.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("cargo:rerun-if-changed=migrations");
+}