small refactorings and cleanups, improved bun/node adapter, updated docs

examples/node/index.js

@@ -1,22 +1,20 @@
 import { serve } from "bknd/adapter/node";
 
+// Actually, all it takes is the following line:
+// serve();
+
 // this is optional, if omitted, it uses an in-memory database
-/** @type {import("bknd").CreateAppConfig} */
+/** @type {import("bknd/adapter/node").NodeAdapterOptions} */
 const config = {
    connection: {
       type: "libsql",
       config: {
-         url: "http://localhost:8080"
+         url: ":memory:"
       }
-   }
-};
-
-serve(config, {
-   port: 1337,
-   listener: ({ port }) => {
-      console.log(`Server is running on http://localhost:${port}`);
    },
    // this is only required to run inside the same workspace
    // leave blank if you're running this from a different project
    relativeDistPath: "../../app/dist"
-});
+};
+
+serve(config);