In CI, notepad.exe isn't starting (or starting in time) when using start-process with .txt based on file association.
Since the test is validating opening files by association, fix is to create our own association that is predictable.
* 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
This restructuring moves tests to a directory name which matches the module
in which the cmdlet resides which should improve the discoverability of a
specific test.
For tests which are not about cmdlets in a module, new directories have been
created to make those tests easier to find as well