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/2025-05-21-192936_create_instance_permissions/up.sql

@@ -0,0 +1,5 @@
+-- Your SQL goes here
+CREATE TABLE instance_permissions (
+    uuid uuid PRIMARY KEY NOT NULL REFERENCES users(uuid),
+    administrator boolean NOT NULL DEFAULT FALSE
+);