large refactor: reorganize code

src/commands/gambling/mod.rs

@@ -0,0 +1,14 @@
+use std::collections::HashMap;
+use poise::serenity_prelude::UserId;
+
+pub mod balance;
+pub mod give;
+pub mod wager;
+
+pub(self) fn get_user_wealth_mut(users: &mut HashMap<UserId, usize>, id: UserId) -> &mut usize {
+    if users.get(&id).is_none() {
+        users.insert(id, 100);
+    }
+
+    users.get_mut(&id).unwrap()
+}