Add PowerKit, update PolyShim to 2.10.1, remove hand-written utility equivalents (#185)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Tyrrrz <1935960+Tyrrrz@users.noreply.github.com>

Author: Copilot

CliFx.Generators/Binding/CommandInputSymbol.cs

@@ -2,6 +2,7 @@
 using System.Linq;
 using CliFx.Generators.Utils.Extensions;
 using Microsoft.CodeAnalysis;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators.Binding;
 

CliFx.Generators/Binding/CommandOptionSymbol.cs

@@ -5,6 +5,7 @@
 using CliFx.Generators.Utils;
 using CliFx.Generators.Utils.Extensions;
 using Microsoft.CodeAnalysis;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators.Binding;
 

CliFx.Generators/Binding/CommandParameterSymbol.cs

@@ -5,6 +5,7 @@
 using CliFx.Generators.Utils;
 using CliFx.Generators.Utils.Extensions;
 using Microsoft.CodeAnalysis;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators.Binding;
 

CliFx.Generators/CliFx.Generators.csproj

@@ -15,5 +15,6 @@
     <PackageReference Include="CSharpier.MsBuild" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" PrivateAssets="all" />
     <PackageReference Include="PolyShim" PrivateAssets="all" />
+    <PackageReference Include="PowerKit" PrivateAssets="all" />
   </ItemGroup>
 </Project>

CliFx.Generators/CommandDescriptorGenerator.cs

@@ -9,6 +9,7 @@
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.Text;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators;
 

CliFx.Generators/Emitters/CommandDescriptor.cs

@@ -5,6 +5,7 @@
 using CliFx.Generators.Utils;
 using CliFx.Generators.Utils.Extensions;
 using Microsoft.CodeAnalysis;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators.Emitters;
 

CliFx.Generators/Emitters/CommandRegistration.cs

@@ -5,6 +5,7 @@
 using CliFx.Generators.Utils;
 using CliFx.Generators.Utils.Extensions;
 using Microsoft.CodeAnalysis;
+using PowerKit.Extensions;
 
 namespace CliFx.Generators.Emitters;
 

CliFx.Generators/Utils/Extensions/CollectionExtensions.cs

@@ -18,6 +18,7 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="PolyShim" PrivateAssets="all" />
+    <PackageReference Include="PowerKit" PrivateAssets="all" />
     <PackageReference Include="xunit" />
     <PackageReference Include="xunit.runner.visualstudio" PrivateAssets="all" />
   </ItemGroup>