feat: rename 'fee' to 'unitPrice' across purchase components and models

- Updated form component to use 'unitPrice' instead of 'fee'.
- Adjusted product charge row form fields and templates to reflect the new naming.
- Modified receipt template and related components to utilize 'unitPrice'.
- Changed models and interfaces to replace 'fee' with 'unitPrice'.
- Updated supplier invoice and statistics components to align with the new naming convention.
- Added new API routes for dashboard and statistics modules.

src/app/shared/components/purchaseReceiptPayment/wrapper.component.ts

@@ -1,6 +1,6 @@
 import { ToastService } from '@/core/services/toast.service';
 import { SupplierInvoicePayFormComponent } from '@/modules/suppliers/components/invoices/pay-form.component';
-import { Component, Input, signal } from '@angular/core';
+import { Component, EventEmitter, Input, Output, signal } from '@angular/core';
 import { IPurchaseReceiptResponse } from '../../../modules/purchases/models';
 import { ConfirmationDialogService } from '../confirmationDialog/confirmation-dialog.service';
 
@@ -12,6 +12,8 @@ import { ConfirmationDialogService } from '../confirmationDialog/confirmation-di
 export class PurchaseReceiptPaymentWrapperComponent {
   @Input() purchaseReceipt!: IPurchaseReceiptResponse;
 
+  @Output() onSubmit = new EventEmitter<void>();
+
   showPaymentForm = signal(false);
   constructor(
     private confirmService: ConfirmationDialogService,
@@ -40,7 +42,12 @@ export class PurchaseReceiptPaymentWrapperComponent {
     });
   }
 
-  submit() {}
+  submitted() {
+    console.log('submitted');
+
+    this.showPaymentForm.set(false);
+    this.onSubmit.emit();
+  }
 
   toPaymentForm() {
     this.showPaymentForm.set(true);