feat: add basic HTTP, websocket functionality

- add ntex and serde as requirements
- add HTTP server with index/ and ws/ endpoints
- add websocket types and systems, basic Ping and GetTracks endpoints
- add serialize/deserialize support to models::Tracks
- add handle and get_tracks method to library
- clean up types.rs

src/main.rs

@@ -10,10 +10,11 @@ use std::env;
 
 mod library;
 mod models;
+mod net;
 mod schema;
 mod types;
 
-use library::{Importer, Library};
+use library::{Handle, Importer, Library};
 
 fn open_db_file() -> SqliteConnection {
     let database_url = env::var("DATABASE_URL").expect("DATABASE_URL missing");
@@ -47,4 +48,8 @@ fn main() {
         .expect("Error importing files");
 
     library_instance.print().expect("Error printing library");
+
+    let library_handle = Handle::new(library_instance);
+
+    net::http::start(library_handle).expect("HTTP server failed to start");
 }