Add autoload for TestLanguage.psm1 TestHelpers.psm1 (#3456)

* Add autoload for TestHelpers.psm1

Test.Helpers.psm1 was renamed to TestHelpers.psm1

* Resolve conflit and rebase Add autoload for TestLanguage.psm1

* Remove unneeded comments from PSD1 files

* Rename test modules

Remove approved verbs (Get-Verb) from module names.

* Enhance ShouldBeErrorId to output exception into pipeline for later analysis

* Remove unneeded comments

* Resolve merge conflict

test/powershell/Modules/Microsoft.PowerShell.Utility/Set-Date.Tests.ps1

@@ -3,7 +3,6 @@
 # determine whether we're elevated
 Describe "Set-Date" -Tag "CI" {
     BeforeAll {
-        Import-Module (join-path $psscriptroot "../../Common/Test.Helpers.psm1")
         $IsElevated = Test-IsElevated
     }