feat: migrate from SQLite to PostgreSQL and update database handling

drizzle.config.ts

@@ -3,8 +3,8 @@ import { defineConfig } from "drizzle-kit";
 export default defineConfig({
   schema: "./src/db/schema.ts",
   out: "./src/db/migrations",
-  dialect: "sqlite",
+  dialect: "postgresql",
   dbCredentials: {
-    url: process.env.DATABASE_URL ?? "file:./data/booster-role.sqlite"
+    url: process.env.DATABASE_URL ?? "postgresql://booster_role:booster_role@localhost:5432/booster_role"
   }
 });