save refresh token in login route

migrations/20260704192907_refresh_tokens_table.sql

@@ -0,0 +1,11 @@
+-- +goose Up
+CREATE TABLE IF NOT EXISTS refresh_tokens (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id INT NOT NULL,
+    refresh_token TEXT NOT NULL,
+    
+    CONSTRAINT fk_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- +goose Down
+DROP TABLE IF EXISTS refresh_tokens;