feat: clean up bot restrictions

src/routes/users/add_friend.rs

@@ -1,5 +1,5 @@
 use revolt_quark::models::User;
-use revolt_quark::{Database, Result};
+use revolt_quark::{Database, Error, Result};
 
 use rocket::serde::json::Json;
 use rocket::State;
@@ -11,6 +11,11 @@ use rocket::State;
 #[put("/<username>/friend")]
 pub async fn req(db: &State<Database>, user: User, username: String) -> Result<Json<User>> {
     let mut target = db.fetch_user_by_username(&username).await?;
+
+    if user.bot.is_some() || target.bot.is_some() {
+        return Err(Error::IsBot);
+    }
+
     user.add_friend(db, &mut target).await?;
     Ok(Json(target.with_auto_perspective(db, &user).await))
 }