fix: adjust from boilerplate to lti project

internal/database/migrations/20250925040409_create_lti_tables.up.sql

@@ -0,0 +1,8 @@
+-- Users
+CREATE TABLE IF NOT EXISTS users (
+    id              BIGSERIAL      PRIMARY KEY,
+    name            VARCHAR,
+    created_at      TIMESTAMPTZ    NOT NULL DEFAULT now(),
+    updated_at      TIMESTAMPTZ    NOT NULL DEFAULT now(),
+    deleted_at      TIMESTAMPTZ
+);