Convert the solution file to the new SLNX format (#19328)

build/pipelines/templates-v2/job-build-package-wpf.yml

@@ -75,9 +75,9 @@ jobs:
   - template: .\steps-restore-nuget.yml
 
   - task: VSBuild@1
-    displayName: Build solution OpenConsole.sln for WPF Control (Pack)
+    displayName: Build solution OpenConsole.slnx for WPF Control (Pack)
     inputs:
-      solution: 'OpenConsole.sln'
+      solution: 'OpenConsole.slnx'
       msbuildArgs: >-
         /p:WindowsTerminalReleaseBuild=true;Version=$(XES_PACKAGEVERSIONNUMBER)
         /p:NoBuild=true

build/pipelines/templates-v2/job-build-project.yml

@@ -170,9 +170,9 @@ jobs:
   - ${{ parameters.beforeBuildSteps }}
 
   - task: VSBuild@1
-    displayName: Build OpenConsole.sln
+    displayName: Build OpenConsole.slnx
     inputs:
-      solution: 'OpenConsole.sln'
+      solution: 'OpenConsole.slnx'
       msbuildArgs: >-
         /p:WindowsTerminalOfficialBuild=true;WindowsTerminalBranding=${{ parameters.branding }};PGOBuildMode=${{ parameters.pgoBuildMode }}
         ${{ parameters.additionalBuildOptions }}

build/pipelines/templates-v2/steps-restore-nuget.yml

@@ -19,14 +19,16 @@ steps:
     restoreSolution: build/packages.config
     restoreDirectory: '$(Build.SourcesDirectory)\packages'
 
-- task: 333b11bd-d341-40d9-afcf-b32d5ce6f23b@2
+- task: VSBuild@1
   displayName: Restore NuGet packages for solution
   inputs:
-    command: restore
-    feedsToUse: config
-    configPath: NuGet.config
-    restoreSolution: OpenConsole.sln
-    restoreDirectory: '$(Build.SourcesDirectory)\packages'
+    solution: 'OpenConsole.slnx'
+    msbuildArgs: /t:Restore
+    platform: $(BuildPlatform)
+    configuration: $(BuildConfiguration)
+    msbuildArchitecture: x64
+  env:
+    SYSTEM_ACCESSTOKEN: $(System.AccessToken)
 
 - task: 333b11bd-d341-40d9-afcf-b32d5ce6f23b@2
   displayName: Restore NuGet packages for global nuget