Fix temp debugging after it broke bringing in $psEditor

[TylerLeonhardt]

Fixes PowerShell/vscode-powershell#2402

Apparently, when I added $psEditor back in, I broke Temp debugging again...

Now it works. The main changes are:

• Add a null ILanguageServer to the service collection so that the EditorOperationsService has something to retrieve
• If the languageServer is null, warn the user to use the main PowerShell Integrated Console
• Bring in @rjmholt 's change in [WIP] Fix temp debugging startup #1148
• Actually have $psEditor be available in the console by triggering the creation of the service that sets the psvariable

[TylerLeonhardt]

Here is an overview of what got changed by this pull request:

Issues
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- Added 2
           

Complexity increasing per file
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- src/PowerShellEditorServices/Services/PowerShellContext/EditorOperationsService.cs  1
         

See the complete overview on Codacy

[TylerLeonhardt]

hopefully this is the last time I have to fix temp debugging lol