add 2 endpoints for report

Tsi1.Api/Tsi1.BusinessLayer/Dtos/TenantCourseDto.cs

@@ -8,13 +8,13 @@ namespace Tsi1.BusinessLayer.Dtos
     {
         public TenantCourseDto()
         {
-            CourseDtos = new List<CoursePreviewDto>();
+            Courses = new List<CoursePreviewDto>();
         }
 
         public int Id { get; set; }
 
         public string Name { get; set; }
 
-        public List<CoursePreviewDto> CourseDtos { get; set; }
+        public List<CoursePreviewDto> Courses { get; set; }
     }
 }