FEAT: Allow users to view pending follow requests they sent

This commit implements the `following/requests/sent` interface firstly
implemented on Firefish, and provides a UI interface to view the pending
follow requests users sent.

packages/misskey-js/src/autogen/apiClientJSDoc.ts

@@ -2029,6 +2029,17 @@ declare module '../api.js' {
       credential?: string | null,
     ): Promise<SwitchCaseResponseType<E, P>>;
 
+    /**
+     * No description provided.
+     * 
+     * **Credential required**: *Yes* / **Permission**: *read:following*
+     */
+    request<E extends 'following/requests/sent', P extends Endpoints[E]['req']>(
+      endpoint: E,
+      params: P,
+      credential?: string | null,
+    ): Promise<SwitchCaseResponseType<E, P>>;
+
     /**
      * No description provided.
      *