feat: use diesel-cli instead of hand writing tables

after reading the documentation, crazy right? I figured out i was making my life hard, this makes my life easy again

migrations/2025-05-21-194207_create_invites/down.sql

@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+DROP TABLE invites;

migrations/2025-05-21-194207_create_invites/up.sql

@@ -0,0 +1,6 @@
+-- Your SQL goes here
+CREATE TABLE invites (
+    id varchar(32) PRIMARY KEY NOT NULL,
+    guild_uuid uuid NOT NULL REFERENCES guilds(uuid) ON DELETE CASCADE,
+    user_uuid uuid NOT NULL REFERENCES users(uuid)
+);