Add database seeding functionality, update Prisma configuration, and create seed script for initial data population

prisma/seed.ts

@@ -0,0 +1,25 @@
+import { PrismaBetterSqlite3 } from '@prisma/adapter-better-sqlite3';
+import { PrismaClient } from '@prisma/client';
+import { env } from 'prisma/config';
+
+const adapter = new PrismaBetterSqlite3({
+	url: env('DATABASE_URL') || ''
+});
+const db = new PrismaClient({
+	adapter
+});
+async function seed() {
+	const year = new Date().getFullYear();
+	await db.year.create({
+		data: {
+			year,
+			budget: 3000
+		}
+	});
+}
+
+seed()
+	.catch((e) => {})
+	.finally(async () => {
+		await db.$disconnect();
+	});