feat: add supplier payment and allocation models, API, and frontend components

- Created `SupplierPayment` and `SupplierPaymentGRN` models for managing supplier payments and their allocations.
- Implemented API endpoints for listing and creating supplier payments.
- Developed frontend components for displaying and recording supplier payments, including a dialog for payment creation.
- Integrated GRN allocations into the payment creation process, ensuring total allocations match the payment amount.
- Added pagination and loading states for the payments list.

distribution_fe/lib/api/index.ts

@@ -15,6 +15,7 @@ export { sysConfig, ITEM_TRACKING_KEYS, GRN_TAX_KEYS, grnTaxSettings, DEFAULT_GR
 export { bankAccounts } from './bank-accounts'
 export { chequeBooks, chequePages } from './cheques'
 export { receivedCheques } from './received-cheques'
+export { supplierPayments } from './supplier-payments'
 export { getPaginatedItems } from './paginated'
 
 export type { PageParams } from './master'