added space model delete to bloc and api

lib/services/space_model_mang_api.dart

@@ -60,4 +60,17 @@ class SpaceModelManagementApi {
     );
     return response;
   }
+
+  Future<bool> deleteSpaceModel(String spaceModelUuid, String projectId) async {
+    final response = await HTTPService().delete(
+      path: ApiEndpoints.getSpaceModel
+          .replaceAll('{projectId}', projectId)
+          .replaceAll('{spaceModelUuid}', spaceModelUuid),
+      showServerMessage: true,
+      expectedResponseModel: (json) {
+        return json['success'] ?? false;
+      },
+    );
+    return response;
+  }
 }