Add initial database schema and references

Also look into users a bit

migration/src/lib.rs

@@ -0,0 +1,16 @@
+pub use sea_orm_migration::prelude::*;
+
+mod m20240813_000001_create_users;
+mod m20240813_000002_create_game;
+
+pub struct Migrator;
+
+#[async_trait::async_trait]
+impl MigratorTrait for Migrator {
+    fn migrations() -> Vec<Box<dyn MigrationTrait>> {
+        vec![
+            Box::new(m20240813_000001_create_users::Migration),
+            Box::new(m20240813_000002_create_game::Migration),
+        ]
+    }
+}