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/engine/Module/NewModuleManifest.Tests.ps1

@@ -1,5 +1,3 @@
-Import-Module $PSScriptRoot\..\..\Common\Test.Helpers.psm1
-
 Describe "New-ModuleManifest tests" -tags "CI" {
     BeforeEach {
         New-Item -ItemType Directory -Path testdrive:/module

test/powershell/engine/Module/TestModuleManifest.Tests.ps1

@@ -1,5 +1,3 @@
-Import-Module $PSScriptRoot\..\..\Common\Test.Helpers.psm1
-
 Describe "Test-ModuleManifest tests" -tags "CI" {
 
     AfterEach {