feat: Add models crate (#41)

Cargo.toml

@@ -4,6 +4,7 @@ members = [
     "crates/rust-arch",
     "crates/arch-api",
     "crates/arch-core",
+    "crates/arch-core-models",
     "crates/arch-db",
     "crates/arch-utils",
 ]

crates/arch-core-models/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "arch-core-models"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+homepage.workspace = true
+repository.workspace = true
+readme.workspace = true
+rust-version.workspace = true
+
+[dependencies]

crates/arch-core-models/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

crates/arch-db/src/lib.rs

@@ -26,6 +26,7 @@ pub async fn create_database_connection(url: &str) -> Result<Arc<DatabaseReposit
     apply_migrations(&database).await?;
 
     let database = Arc::new(DatabaseRepository { database });
+    tracing::debug!("...connected to database");
 
     Ok(database)
 }