Implemented caching on all get endpoints and service layer

PostFundManagement.Application/Services/Users/UserCacheService.cs

@@ -1,5 +1,6 @@
 using PostFundManagement.Application.Abstractions;
 using PostFundManagement.Application.Abstractions.Services;
+using PostFundManagement.Application.Extensions;
 using PostFundManagement.Application.Services.Shared;
 using PostFundManagement.Domain;
 using PostFundManagement.Domain.Models;
@@ -21,14 +22,12 @@ public sealed class UserCacheService(UserService service, IDistributedCache cach
 
                 if (userResult.IsFailed) return userResult;
 
-                await cache.SetStringAsync(cacheKey, JsonSerializer.Serialize(userResult.Value), cacheOptions, cancellationToken);
+                await cache.SetStringAsync(cacheKey, userResult.Value.ToJson(), cacheOptions, cancellationToken);
 
                 return userResult;
             }
 
-            var restored = JsonSerializer.Deserialize<User>(cached)!;
-
-            return Result.Ok(restored);
+            return Result.Ok(cached.FromJson<User>());
         }));
 
     public async ValueTask<Result<User[]>> GetUsersAsync(Pagination pagination, UserFilterRequest request, CancellationToken cancellationToken = default) =>
@@ -45,15 +44,13 @@ public sealed class UserCacheService(UserService service, IDistributedCache cach
 
                 if (usersResult.IsFailed) return usersResult;
 
-                await cache.SetStringAsync(cacheKey, JsonSerializer.Serialize(usersResult.Value), 
+                await cache.SetStringAsync(cacheKey, usersResult.Value.ToJson(), 
                     cacheOptions, cancellationToken);
 
                 return usersResult;
             }
 
-            var restored = JsonSerializer.Deserialize<User[]>(cached)!;
-
-            return Result.Ok(restored);
+            return Result.Ok(cached.FromJson<User[]>());
         }));
 
     public async ValueTask<Result> SyncUserAsync(Guid userId, string email, CancellationToken cancellationToken = default) =>