introduced UnitTest project

.gitignore

@@ -396,4 +396,3 @@ FodyWeavers.xsd
 
 # JetBrains Rider
 *.sln.iml
-/hw01/UnitTest_Hw01

hw01/UnitTest_Hw01/UnitTest1.cs

+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace UnitTest_Hw01
+{
+    [TestClass]
+    public class UnitTest1
+    {
+        [TestMethod]
+        public void TestMethod1()
+        {
+        }
+    }
+}
\ No newline at end of file

hw01/UnitTest_Hw01/UnitTest_Hw01.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="2.2.7" />
+    <PackageReference Include="MSTest.TestFramework" Version="2.2.7" />
+    <PackageReference Include="coverlet.collector" Version="3.1.0" />
+  </ItemGroup>
+
+</Project>