feat: new oh-my-posh setup

Author: jimbrig

Profile/prompt.ps1

@@ -1,6 +1,7 @@
 # Prompt
-oh-my-posh init pwsh --config "$env:POSH_THEMES_PATH\wopian.omp.json" | Invoke-Expression
-# Set-PoshPrompt -Theme wopian -ErrorAction SilentlyContinue
+If (Get-Command oh-my-posh -ErrorAction SilentlyContinue) {
+    oh-my-posh init pwsh --config $ENV:POSH_THEMES_PATH\wopian.omp.json | Invoke-Expression
+}
 
 # Write Current Version and Execution Policy Details:
 Write-Host "PowerShell Version: $($psversiontable.psversion) - ExecutionPolicy: $(Get-ExecutionPolicy)" -ForegroundColor yellow