feat: add pladyground config

Author: Ohh-889

playground/src/config.ts

@@ -0,0 +1,11 @@
+class Config {
+  private _githubUrl = 'https://github.com/Ohh-889/soybean-react-ui';
+
+  get githubUrl() {
+    return this._githubUrl;
+  }
+}
+
+const config = new Config();
+
+export default config;