added backend and 2 endpoints fetch

backend/internal/operation/GetAllOperation.go

@@ -0,0 +1,30 @@
+package operation
+
+import "backend/model"
+
+func GetAllOperation() ([]model.Operation, error) {
+	return []model.Operation{
+		{
+			ID:       "1",
+			Title:    "Operation 1",
+			Amount:   100,
+			Category: "Category 1",
+			SubCategory: model.Subcategory{
+				ID:    "1",
+				Title: "subcategory",
+			},
+			Date: "2022-01-01T00:00:00Z",
+			Type: "income",
+			Icon: "😀",
+		},
+		{
+			ID:       "2",
+			Title:    "Operation 2",
+			Amount:   200,
+			Category: "Category 2",
+			Date:     "2022-01-02T00:00:00Z",
+			Type:     "expense",
+			Icon:     "😂",
+		},
+	}, nil
+}