Fixing build errors with CI (#31)

* Swap cake for direct msbuild invocation

* Use manual shell invocation task for msbuild

* Copy nupkg to single folder before publishing artifacts

* Enable folder flattening when copying files

* Only include ColorCode nupkg files

* Removed cake

* Revert "Removed cake"

This reverts commit b67b4bb.

* Removed cake tooling

* Use PackageOutputPath instead of copying files

* Use .editorconfig for file headers

Author: Arlodotexe

.editorconfig

@@ -0,0 +1,15 @@
+# Remove the line below if you want to inherit .editorconfig settings from higher directories
+root = true
+
+# Generated code
+[*{_AssemblyInfo.cs,.g.cs}]
+generated_code = true
+
+# All files
+[*]
+
+# .NET Foundation Header
+file_header_template = Licensed to the .NET Foundation under one or more agreements.\nThe .NET Foundation licenses this file to you under the MIT license.\nSee the LICENSE file in the project root for more information.
+
+# Require file header
+dotnet_diagnostic.IDE0073.severity = warning

ColorCode.sln

@@ -19,8 +19,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ColorCode.WinUI", "ColorCod
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{A4B1B99B-FC3A-4C76-8B46-B96723829FD2}"
 	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
 		azure-pipelines.yml = azure-pipelines.yml
-		build\build.cake = build\build.cake
 		ColorCode.snk = ColorCode.snk
 		Directory.Build.props = Directory.Build.props
 		Directory.Build.targets = Directory.Build.targets

azure-pipelines.yml

@@ -47,15 +47,8 @@ steps:
 
 - powershell: .\build\Install-WindowsSdkISO.ps1 18362
 
-- task: DotNetCoreCLI@2
-  inputs:
-    command: custom
-    custom: msbuild
-    arguments: /t:restore .\ColorCode.sln
-  displayName: NuGet restore
-
-- powershell: .\build\build.ps1
-  displayName: Build
+- script: msbuild -p:Configuration=Release -r -t:pack -p:GenerateLibraryLayout=true -p:PackageOutputPath=..\build\nupkg .\ColorCode.sln
+  displayName: Build and pack
 
 - task: PowerShell@2
   displayName: Authenticode Sign Packages
@@ -70,6 +63,6 @@ steps:
 - task: PublishBuildArtifacts@1
   displayName: Publish Package Artifacts
   inputs:
-    pathToPublish: .\build\nupkg
+    pathToPublish: 'build\nupkg'
     artifactType: container
     artifactName: Packages