Refactor code structure for improved readability and maintainability

Repository/TemplateRepository.cs

@@ -1,4 +1,5 @@
-using Microsoft.SelfService.Portal.Core.API.Context;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.SelfService.Portal.Core.API.Context;
 using Microsoft.SelfService.Portal.Core.API.Interfaces;
 using Microsoft.SelfService.Portal.Core.API.Models;
 
@@ -16,20 +17,60 @@ namespace Microsoft.SelfService.Portal.Core.API.Repository
         public ICollection<TemplateModel> GetTemplates()
         {
             return _context.Templates
+                .AsNoTracking()
                 .ToList();
         }
 
         public TemplateModel GetTemplateById(Guid Id)
         {
             return _context.Templates
+                .AsNoTracking()
                 .Where(t => t.Id == Id)
                 .FirstOrDefault();
         }
 
+        public bool AddTemplateById(TemplateModel template)
+        {
+            _context.Add(template);
+            return SaveChanges();
+        }
+
+        public bool EditTemplateById(TemplateModel template)
+        {
+            _context.Update(template);
+            return SaveChanges();
+        }
+
+        public bool DeleteTemplateById(TemplateModel template)
+        {
+            _context.Remove(template);
+            return SaveChanges();
+        }
+
         public bool CheckTemplateById(Guid Id)
         {
             return _context.Templates
                 .Any(t => t.Id == Id);
         }
-    }    
+
+        public TemplateModel GetTemplateByName(string Name)
+        {
+            return _context.Templates
+                .AsNoTracking()
+                .Where(t => t.Name == Name)
+                .FirstOrDefault();
+        }
+
+        public bool CheckTemplateByName(string Name)
+        {
+            return _context.Templates
+                .Any(t => t.Name == Name);
+        }
+
+        public bool SaveChanges()
+        {
+            var saved = _context.SaveChanges();
+            return saved > 0 ? true : false;
+        }
+    }
 }