fix(debug): 🐛 Refactor debug harness for improved module loading

* Added checks for `$env:BHProjectPath` and adjusted paths for module imports.
* Set up output directory more robustly.
* Changed `Invoke-Plaster` to use `-WhatIf` for safer execution.

Author: HeyItsGilbert

debugHarness.ps1

@@ -1,15 +1,28 @@
 # Use this file to debug the module.
-Import-Module $PSScriptRoot\src\Plaster.psd1
+if ($null -eq $env:BHProjectPath) {
+    $path = Join-Path -Path $PSScriptRoot -ChildPath '..\build.ps1'
+    . $path -Task Build
+}
+$manifest = Import-PowerShellDataFile -Path $env:BHPSModuleManifest
+$outputDir = Join-Path -Path $env:BHProjectPath -ChildPath 'Output'
+$outputModDir = Join-Path -Path $outputDir -ChildPath $env:BHProjectName
+$outputModVerDir = Join-Path -Path $outputModDir -ChildPath $manifest.ModuleVersion
+$outputModVerManifest = Join-Path -Path $outputModVerDir -ChildPath "$($env:BHProjectName).psd1"
+Get-Module $env:BHProjectName | Remove-Module -Force -ErrorAction Ignore
+Import-Module -Name $outputModVerManifest -Verbose:$false -ErrorAction Stop
+
+#region Setup Output Directory
+$OutDir = Join-Path $outputDir "\HarnessOutput"
+Remove-Item $OutDir -Recurse -ErrorAction SilentlyContinue
+New-Item -ItemType Directory -Path $OutDir | Out-Null
+#endregion Setup Output Directory
 
 # Various debug scenarios other than running Invoke-Plaster.
 # Invoke-Pester $PSScriptRoot\test
 # Test-PlasterManifest "$PSScriptRoot\src\Templates\NewModule\plasterManifest.xml" -Verbose
 # Invoke-psake $PSScriptRoot\build.psake.ps1 -taskList BuildHelp
 # return
 
-$OutDir = "$PSScriptRoot\examples\Out"
-Remove-Item $OutDir -Recurse -ErrorAction SilentlyContinue
-
 # $PlasterParams = @{
 #     TemplatePath = "$PSScriptRoot\src\Templates\AddPSScriptAnalyzerSettings"
 #     DestinationPath = $OutDir
@@ -19,7 +32,7 @@ Remove-Item $OutDir -Recurse -ErrorAction SilentlyContinue
 # }
 
 $PlasterParams = @{
-    TemplatePath = "$PSScriptRoot\src\Templates\NewPowerShellScriptModule"
+    TemplatePath = "$PSScriptRoot\Plaster\Templates\NewPowerShellScriptModule"
     DestinationPath = $OutDir
     ModuleName = 'FooUtils'
     Version = '1.2.0'
@@ -48,7 +61,7 @@ $PlasterParams = @{
 #     PassThru = $true
 # }
 
-$obj = Invoke-Plaster @PlasterParams -Force
+$obj = Invoke-Plaster @PlasterParams -WhatIf
 
 "PassThru object is:"
 $obj