Add JobExceptionHandlingBehavior and improve mappings

Introduced `JobExceptionHandlingBehavior` to handle exceptions, log errors, and rethrow them during MediatR pipeline execution. Updated `DependencyInjection.cs` to register the new behavior and added a `recClientApiUrl` parameter for API configuration.

Enhanced `ProfileMappingProfile.cs` and `GetProfileQuery.cs` with XML documentation for better readability. Improved case-insensitive filtering in `GetProfileQuery` with conditional compilation for .NET version compatibility.

Modified `CreateProfileHistoryCommand.cs` to use a non-nullable `AddedWho` property. Added missing `using` directive in `GetProfileQuery.cs` for compatibility. These changes improve code quality, maintainability, and functionality.

ECMJobRunner.Application/Common/Mapping/ProfileMappingProfile.cs

@@ -10,6 +10,9 @@ namespace ECMJobRunner.Application.Common.Mapping
     /// </summary>
     public class ProfileMappingProfile : Profile
     {
+        /// <summary>
+        /// Configures AutoMapper mappings for <see cref="ECMJobRunner.Domain.Entities.CfgProfile"/> and <see cref="ECMJobRunner.Domain.Entities.ProfileSqlJob"/> entities
+        /// </summary>
         public ProfileMappingProfile()
         {
             // CfgProfile -> CfgProfileDto