feat: add optional seed data functionality to init_first_time.sh

- Implemented argument parsing to allow for optional loading of example data with --seed-data flag.
- Added functions to seed example data for customs brokers, clients and providers, packages, classes, parts, pedimentos, and invoices.
- Enhanced user feedback during the seeding process with detailed output of the seeded data counts.
- Updated usage instructions in the script header to reflect the new functionality.

frontend/package.json

@@ -59,6 +59,7 @@
 	"dependencies": {
 		"@types/dompurify": "^3.2.0",
 		"@types/marked": "^6.0.0",
+		"chart.js": "^4.5.1",
 		"dompurify": "^3.0.9",
 		"keycloak-js": "^26.2.1",
 		"lucide-svelte": "^0.553.0",