Added Entry initial repo and services for a create action.

Component/Entries/Service/EntryService.cs

@@ -0,0 +1,40 @@
+using AutoMapper;
+using Diary.Component.Entries.Repository;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Diary.Component.Entries.Service
+{
+
+
+	public interface IEntryService
+	{
+		Task<EntryResource> CreateAsync(CreateEntryResource createEntryResource);
+	}
+	public class EntryService : IEntryService
+	{
+		private readonly IEntryRepository _entryRepository;
+		private readonly IMapper _mapper;
+
+		public EntryService(IEntryRepository entryRepository, IMapper mapper)
+		{
+			_entryRepository = entryRepository ?? throw new ArgumentNullException(nameof(entryRepository));
+			_mapper = mapper ?? throw new ArgumentNullException(nameof(mapper));
+		}
+
+
+		public async Task<EntryResource> CreateAsync(CreateEntryResource createEntryResource)
+		{ 
+			Entry entry = _mapper.Map<Entry>(createEntryResource);
+
+			await _entryRepository.CreateAsync(entry);
+
+			return _mapper.Map<EntryResource>(entry);
+		
+		}
+
+	}
+}