chore(deps): upgrade VsixSdk to 0.4.0 and add VSSDK.BuildTools (#24)

- Upgrade CodingWithCalvin.VsixSdk from 0.3.0 to 0.4.0
- Add Microsoft.VSSDK.BuildTools 17.* package reference

Author: CalvinAllen

src/CodingWithCalvin.BreakpointNotifier/CodingWithCalvin.BreakpointNotifier.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="CodingWithCalvin.VsixSdk/0.3.0">
+<Project Sdk="CodingWithCalvin.VsixSdk/0.4.0">
 
   <PropertyGroup>
     <TargetFramework>net48</TargetFramework>
@@ -11,6 +11,7 @@
   <ItemGroup>
     <PackageReference Include="CodingWithCalvin.Otel4Vsix" Version="0.2.2" />
     <PackageReference Include="Microsoft.VisualStudio.SDK" Version="17.14.40265" />
+    <PackageReference Include="Microsoft.VSSDK.BuildTools" Version="17.*" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>