feat: add cursor-based pagination to bookmarks command

- Add --cursor option to resume pagination from a specific point
- Change --max-pages to enable pagination independently
- Return nextCursor in JSON output for subsequent requests

feat: add cursor param and nextCursor to pagination methods

not modifying max-pages

src/lib/twitter-client-types.ts

@@ -241,6 +241,8 @@ export interface SearchResult {
   success: boolean;
   tweets?: TweetData[];
   error?: string;
+  /** Cursor for fetching the next page of results */
+  nextCursor?: string;
 }
 
 export interface CurrentUserResult {