添加serilog日志支持和部分其他efcore代码

Domain/AggregateModel/AppAggregate/App.cs

@@ -7,9 +7,8 @@ using System.Threading.Tasks;
 
 namespace Domain.AggregateModel.AppAggregate
 {
-    public class App : IAggregateRoot
+    public class App :Entity, IAggregateRoot
     {
-        public int Id { get; private set; }
         public string AppKey { get;private set; }
         public string BaseUrl { get; private set; }
         public string Remarks { get;private set; }

Domain/AggregateModel/LinkAggregate/Link.cs

@@ -10,7 +10,7 @@ using System.Threading.Tasks;
 
 namespace Domain.AggregateModel.LinkAggregate
 {
-    public class Link:IAggregateRoot
+    public class Link:Entity,IAggregateRoot
     {
         /// <summary>
         /// 非自增主键

Domain/Domain.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
+    <TargetFramework>netstandard2.1</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>