Adding code to the syncers module

src/syncers/syncer_base.rs

@@ -0,0 +1,19 @@
+
+use crate::models;
+
+struct Syncer {
+}
+
+impl Syncer {
+    pub fn retrieve_url(api: &models::api::API, song: &models::song::Song) -> String {
+        let mut url: String = String::from(&api.url);
+        url += &String::from("api/");
+        url += &String::from(&api.version);
+        url += &String::from("/");
+        url += &String::from(&api.endpoint);
+        url += &String::from("/");
+        url += &song.id.unwrap().to_string();
+
+        return url;
+    }
+}