feat: add kependudukan seeders, API routes, year filter, and navbar menu

- Add Prisma models: DataBanjar, DistribusiAgama, DistribusiUmur, MigrasiPenduduk, DinamikaPenduduk
- Create seeders for all kependudukan models with year 2026 data
- Register Kependudukan API routes in route.ts
- Update API findMany endpoints to make tahun parameter optional
- Add YearFilter reusable component for admin pages
- Update 4 kependudukan admin pages with year filter UI
- Fix Mantine color array in AdminThemeProvider (add 10th element)
- Fix invalid Mantine color scale in paguTable.tsx (gray.50 -> gray.1)
- Add Kependudukan menu to navbar-list-menu.ts
- Fix Bun JSON import resolution with loadJsonData helper
- Update 74 seeder files to use dynamic JSON loading

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

prisma/load-json.ts

@@ -0,0 +1,13 @@
+import { readFileSync } from "fs";
+import { join } from "path";
+
+/**
+ * Load JSON file dynamically from prisma/data directory
+ * @param relativePath - Relative path from prisma/data (e.g., 'pendidikan/beasiswa-pendaftar/beasiswa-pendaftar.json')
+ * @returns Parsed JSON data
+ */
+export function loadJsonData<T = any>(relativePath: string): T {
+  const fullPath = join(process.cwd(), "prisma/data", relativePath);
+  const content = readFileSync(fullPath, "utf-8");
+  return JSON.parse(content);
+}