(maint) Allow better debugging of Chocolatey GUI

Description Of Changes

This commit introduces a change similar to what exists in Chocolatey CLI. While in debug mode, we source the installation location of both Chocolatey and the GUI Licensed assembly from a different location, rather than the official location.

Motivation and Context

This means that we can run the debug version of Chocolatey GUI using a locally sourced debug version of Chocolatey, which means that debugging some scenarios is much easier.

Testing

This PR should be tested alongside a PR into Chocolatey GUI Licensed, which makes use of this change.

Operating Systems Testing

N/A

Change Types Made

[x] Bug fix (non-breaking change).
[ ] Feature / Enhancement (non-breaking change).
[ ] Breaking change (fix or feature that could cause existing functionality to change).
[ ] Documentation changes.
[ ] PowerShell code changes.

Change Checklist

[ ] Requires a change to the documentation.
[ ] Documentation has been updated.
[ ] Tests to cover my changes, have been added.
[ ] All new and existing tests passed?
[ ] PowerShell code changes: PowerShell v2 compatibility checked?

Related Issue

N/A - This is merely for allowing better development experience when working with Chocolatey GUI

chocolatey / ChocolateyGUI