feat(api): use tracing-actix logger middleware

- Completely move away from using traditional logs

src/routes/subscriptions.rs

@@ -14,7 +14,6 @@ pub struct FormData {
     // functions args isn't really relevant to the span
     skip(form, db_conn_pool),
     fields(
-        request_id = %Uuid::new_v4(),
         subscriber_email = %form.email,
         subscriber_name = %form.name
     )

src/startup.rs

@@ -1,9 +1,9 @@
 use crate::routes::{healthcheck_route, subscribe_route};
 use actix_web::dev::Server;
-use actix_web::middleware::Logger;
 use actix_web::{web, App, HttpServer};
 use sqlx::PgPool;
 use std::net::TcpListener;
+use tracing_actix_web::TracingLogger;
 
 pub fn run(listener: TcpListener, db_conn_pool: PgPool) -> Result<Server, std::io::Error> {
     // under the hood, web::Data::new will create an Arc
@@ -12,7 +12,7 @@ pub fn run(listener: TcpListener, db_conn_pool: PgPool) -> Result<Server, std::i
 
     let server = HttpServer::new(move || {
         App::new()
-            .wrap(Logger::default())
+            .wrap(TracingLogger::default())
             .route("/health_check", web::get().to(healthcheck_route))
             .route("/subscriptions", web::post().to(subscribe_route))
             .app_data(db_conn_pool.clone())