CmdPal: Configure .editorconfig to format MSBuild files (#45739)

## Summary of the Pull Request

This PR configures the Command Palette's .editorconfig to format MSBuild
project and props files, and reformats the files accordingly.

No functional changes.

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.PerformanceMonitor/Microsoft.CmdPal.Ext.PerformanceMonitor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\..\..\..\Common.Dotnet.CsWinRT.props" />
   <Import Project="..\..\..\..\Common.Dotnet.AotCompatibility.props" />
-    <Import Project="..\Common.ExtDependencies.props" />
+  <Import Project="..\Common.ExtDependencies.props" />
   <PropertyGroup>
     <RootNamespace>Microsoft.CmdPal.Ext.PerformanceMonitor</RootNamespace>
     <OutputPath>$(SolutionDir)$(Platform)\$(Configuration)\WinUI3Apps\CmdPal</OutputPath>
@@ -9,7 +9,7 @@
     <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
     <!-- MRT from windows app sdk will search for a pri file with the same name of the module before defaulting to resources.pri -->
     <ProjectPriFileName>Microsoft.CmdPal.Ext.PerformanceMonitor.pri</ProjectPriFileName>
-	<nullable>enable</nullable>
+    <nullable>enable</nullable>
     <LangVersion>preview</LangVersion>
   </PropertyGroup>