refactor: update exports and add factory for S5Node

src/index.ts

@@ -1,3 +1,9 @@
+import { S5Node } from "#node.js";
+import type { S5NodeConfig } from "#node.js";
+
 export * from "./types.js";
-export * from "./service/p2p.js";
-export * from "./service/registry.js";
+export type { S5NodeConfig };
+
+export function createNode(config: S5NodeConfig) {
+  return new S5Node(config);
+}

src/node.ts

@@ -26,7 +26,7 @@ const DEFAULT_LOGGER = {
   },
 };
 
-interface S5NodeConfig {
+export interface S5NodeConfig {
   p2p?: {
     network: string;
     peers?: {