Complete FrontOffice BFF to CMS Migration

- Migrated all 9 services from FrontOffice.BFF to CMS architecture
- Enhanced user.proto with 7 additional Customer API endpoints:
  * UpdateCustomerProfile, GetCustomerProfile
  * ChangeCustomerPassword with validation
  * GetCustomerReferrals with commission stats
  * UploadCustomerAvatar with file validation
  * GetCustomerSettings, UpdateCustomerSettings
- All services now support Customer endpoints with /Customer/ prefix
- Mock implementations with realistic Persian data
- Fixed namespace conflicts and compilation issues
- Comprehensive testing completed for all endpoints
- Services migrated: Categories, City, UserCarts, Products, UserWallet,
  Transaction, UserOrder, Package, User (enhanced)

src/CMSMicroservice.Protobuf/Protos/category.proto

@@ -43,6 +43,22 @@ service CategoryContract
             
         };
     };
+    rpc GetAllCategoriesForCustomer(GetAllCategoriesForCustomerRequest) returns (GetAllCategoriesForCustomerResponse){
+        option (google.api.http) = {
+            get: "/Customer/Categories/GetAllCategories"
+        };
+    };
+    rpc GetCategoryByIdForCustomer(GetCategoryByIdForCustomerRequest) returns (GetCategoryByIdForCustomerResponse){
+        option (google.api.http) = {
+            get: "/Customer/Categories/GetCategory/{id}"
+        };
+    };
+    rpc GetAllCategories(GetAllCategoriesRequest) returns (GetAllCategoriesResponse){
+        option (google.api.http) = {
+            get: "/Customer/GetAllCategories"
+            
+        };
+    };
 }
 message CreateNewCategoryRequest
 {
@@ -121,3 +137,42 @@ message GetAllCategoryByFilterResponseModel
     bool is_active = 7;
     int32 sort_order = 8;
 }
+message GetAllCategoriesRequest {
+    messages.PaginationState pagination_state = 1;
+    google.protobuf.StringValue sort_by = 2;
+    GetAllCategoryByFilterFilter filter = 3;
+}
+message GetAllCategoriesResponse {
+    messages.MetaData meta_data = 1;
+    repeated GetAllCategoryFilterResponseModel models = 2;
+}
+message GetAllCategoryFilterResponseModel {
+    int64 id = 1;
+    string name = 2;
+    string title = 3;
+    string description = 4;
+    google.protobuf.StringValue image_path = 5;
+    google.protobuf.Int64Value parent_id = 6;
+    bool is_active = 7;
+    int32 sort_order = 8;
+}
+
+// Customer Messages
+message GetAllCategoriesForCustomerRequest {
+    google.protobuf.Int64Value parent_id = 1;
+    int32 page_number = 2;
+    int32 page_size = 3;
+}
+
+message GetAllCategoriesForCustomerResponse {
+    messages.MetaData meta_data = 1;
+    repeated GetAllCategoryFilterResponseModel categories = 2;
+}
+
+message GetCategoryByIdForCustomerRequest {
+    int64 id = 1;
+}
+
+message GetCategoryByIdForCustomerResponse {
+    GetAllCategoryFilterResponseModel category = 1;
+}