feat: add customizable page_size to twitter timeline

src/twitter.rs

@@ -32,10 +32,11 @@ pub async fn get_user_timeline(
     screen_name: &str,
     token: &Token,
     lid: Option<u64>,
+    page_size: i32,
 ) -> Result<Vec<Tweet>, Box<dyn Error>> {
     // fix the page size to 200 as it is the maximum Twitter authorizes
     let (_, feed) = user_timeline(UserID::from(screen_name.to_owned()), true, false, token)
-        .with_page_size(200)
+        .with_page_size(page_size)
         .older(lid)
         .await?;