chore: added utm source & medium on playground url

src/cli/server/mod.rs

@@ -6,6 +6,7 @@ pub mod server_config;
 pub use http_server::Server;
 
 use self::server_config::ServerConfig;
+use crate::cli::command::VERSION;
 
 fn log_launch(sc: &ServerConfig) {
     let addr = sc.addr().to_string();
@@ -16,6 +17,15 @@ fn log_launch(sc: &ServerConfig) {
     );
 
     let url = sc.graphiql_url();
-    let url = format!("https://tailcall.run/playground/?u={}/graphql", url);
+    let utm_source = if VERSION.eq("0.1.0-dev") {
+        "tailcall-debug"
+    } else {
+        "tailcall-release"
+    };
+    let utm_medium = "server";
+    let url = format!(
+        "https://tailcall.run/playground/?u={}/graphql&utm_source={}&utm_medium={}",
+        url, utm_source, utm_medium
+    );
     tracing::info!("🌍 Playground: {}", url);
 }