Add installPSResources.ps1 to remove dependency on PSES repo

Author: andyleejordan

.github/workflows/ci-test.yml

@@ -6,7 +6,6 @@ on:
   pull_request:
     # The branches below must be a subset of the branches above
     branches: [ main ]
-    paths-ignore: [ '**/*.md' ]
   merge_group:
     types: [ checks_requested ]
 
@@ -50,7 +49,7 @@ jobs:
 
       - name: Install PSResources
         shell: pwsh
-        run: ../PowerShellEditorServices/tools/installPSResources.ps1
+        run: ./tools/installPSResources.ps1
 
       - name: Deploy generated NuGet configuration
         shell: pwsh

tools/installPSResources.ps1

@@ -0,0 +1,11 @@
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+
+Set-PSRepository -Name PSGallery -InstallationPolicy Trusted | Out-Null
+if ($PSVersionTable.PSVersion.Major -lt 6) {
+    throw "The build script requires PowerShell 7!"
+}
+
+# TODO: Switch to Install-PSResource when CI uses PowerShell 7.4
+Install-Module -Name InvokeBuild -Scope CurrentUser
+Install-Module -Name platyPS -Scope CurrentUser