Add spaces between parameters when starting PSES

[rkeithhill]

PR Summary

The current code works because the previous arg is quoted. For example, the
following is legal (which is something I didn't realize until today):
Foo -Version '1.2.3.4'-NextParameter
But this is not good form, so adding spaces between params.

Please merge to the 2.0.0 branch.

The resulting args look like this in the Output window:

9/30/2018 8:11:12 PM [NORMAL] - Language server starting --
9/30/2018 8:11:12 PM [NORMAL] -     exe: C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe
9/30/2018 8:11:12 PM [NORMAL] -     args: c:\Users\Keith\GitHub\rkeithhill\PowerShellEditorServices\module\PowerShellEditorServices\Start-EditorServices.ps1 -HostName 'Visual Studio Code Host' -HostProfileId 'Microsoft.VSCode' -HostVersion '1.9.1'-AdditionalModules @('PowerShellEditorServices.VSCode') -BundledModulesPath 'c:\Users\Keith\GitHub\rkeithhill\PowerShellEditorServices\module'-EnableConsoleRepl -LogLevel 'Verbose' -LogPath 'c:\Users\Keith\GitHub\rkeithhill\vscode-powershell\logs\1538359867-someValue.sessionId\EditorServices.log' -SessionDetailsPath 'c:\Users\Keith\GitHub\rkeithhill\vscode-powershell\sessions\PSES-VSCode-12072-194919' -FeatureFlags @('PSReadLine')

You can see that -AdditionalModules runs together with the previous arg. Same for -EnableConsoleRepl.

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[rjmholt]

LGTM!

We'll merge to master and rebase into 2.0.0 after that

[TylerLeonhardt]

Nice catch Keith! LGTM