feat: add purchase invoice batch print page and related components

- Implemented PurchaseInvoiceBatchPrintPage for printing purchase invoices.
- Created InvoicePrintHeader and InvoicePrintFooter components for invoice layout.
- Added invoice layout presets for different styles (Classic, Compact, Modern).
- Developed PurchaseInvoicePaymentDialog for handling payments against invoices.
- Introduced API mocks for company profile and invoice template configuration.
- Added validation functions for company profile and purchase invoices.
- Defined types for company profile, invoice template configuration, and purchase invoices.

Backend/ERPCore/appsettings.json

@@ -47,5 +47,9 @@
   "SalesInvoice": {
     "GlAccountsReceivableCode": "1300"
   },
+  "PurchaseInvoice": {
+    "GlClearingAccountCode": "2000",
+    "GlAccountsPayableCode": "2200"
+  },
   "AllowedHosts": "*"
 }