feat(adjust): Add Remote Config missing functions (#4756)

* Add missing functions

* Revert changes to firebase

* revert full stop

* add callback functions

* fix return types

* fix callback function types

* fix jsdoc

src/@awesome-cordova-plugins/plugins/firebase-x/index.ts

@@ -797,6 +797,28 @@ export class FirebaseX extends AwesomeCordovaNativePlugin {
     return;
   }
 
+  /**
+   * Asynchronously fetches and then activates the fetched configs.
+   *
+   * @param {Function} success - callback function which will be passed a {boolean} argument indicating whether result the current call activated the fetched config.
+   * @param {Function} error - callback function which will be passed a {string} error message as an argument
+   */
+  @Cordova()
+  fetchAndActivate(success: (activated: boolean) => void, error: (err: string) => void): void {
+    return;
+  }
+
+  /**
+   * Returns a Map of Firebase Remote Config key value pairs.
+   *
+   * @param {Function} success - callback function which will be passed an {object} argument where key is the remote config key and value is the value as a string. If the expected key value is a different primitive type then cast it to the appropriate type.
+   * @param {Function} error - callback function which will be passed a {string} error message as an argument
+   */
+  @Cordova()
+  getAll(success: (values: any) => void, error: (err: string) => void): void {
+    return;
+  }
+
   /**
    * Retrieve a Remote Config value.
    *