feat(invoice): add models for invoice section and position

Author: belsman

packages/modules/invoice/src/lib/models/index.ts

@@ -2,3 +2,5 @@ export * from './invoice-list-item.model';
 export * from './invoice-list.mapper';
 export * from './invoice-detail.model';
 export * from './invoice-detail.mapper';
+export * from './invoice-section.model';
+export * from './invoice-document.model';

packages/modules/invoice/src/lib/models/invoice-document.model.ts

@@ -0,0 +1,5 @@
+export interface InvoiceDocumentVM {
+  id: string;
+  name: string;
+  url: string;
+}

packages/modules/invoice/src/lib/models/invoice-section.model.ts

@@ -0,0 +1,15 @@
+export interface InvoiceSectionVM {
+  id: string;
+  title: string;
+  customerRemark?: string;
+  amount: number;
+  positions: InvoicePositionVM[];
+}
+
+export interface InvoicePositionVM {
+  id: string;
+  type: 'product' | 'fulfillment';
+  name: string;
+  quantity: number;
+  unitPrice: number;
+}