feat: -list parameter added to Get-PoshThemes

-list display the theme full path instead of the preview
Themes location added at the end

docs/docs/install-pwsh.mdx

@@ -42,7 +42,7 @@ Get-PoshThemes
 The module installs all themes in the module folder. To find the actual files, you can use the following command:
 
 ```powershell
-Get-ChildItem "$((Get-Module oh-my-posh).ModuleBase)/themes"
+Get-PoshThemes -list
 ```
 
 ## Replace your existing prompt

packages/powershell/oh-my-posh/oh-my-posh.psm1

@@ -70,7 +70,20 @@ function Set-PoshPrompt {
     (& $poshCommand --init --shell=pwsh --config="$config") | Invoke-Expression
 }
 
-function Get-PoshThemes {
+<#
+.SYNOPSIS
+    Display a preview or a list of installed themes.
+.EXAMPLE
+    Get-PoshThemes
+.Example
+    Gest-PoshThemes -list
+#>
+function Get-PoshThemes() {
+    param(
+        [switch]
+        [Parameter(Mandatory = $false, HelpMessage = "List themes path")]
+        $list
+    )
     $esc = [char]27
     $consoleWidth = $Host.UI.RawUI.WindowSize.Width
     $logo = @'
@@ -84,16 +97,24 @@ function Get-PoshThemes {
                             |___/
 '@
     Write-Host $logo
-    $poshCommand = Get-PoshCommand
+    $themes = Get-ChildItem -Path "$PSScriptRoot\themes\*" -Include '*.omp.json' | Sort-Object Name
-    Get-ChildItem -Path "$PSScriptRoot\themes\*" -Include '*.omp.json' | Sort-Object Name | ForEach-Object -Process {
     Write-Host ("-" * $consoleWidth)
+    if ($list -eq $true) {
+        $themes | Select-Object fullname | Format-Table -HideTableHeaders
+    }
+    else {
+        $poshCommand = Get-PoshCommand
+        $themes | ForEach-Object -Process {
             Write-Host "Theme: $esc[1m$($_.BaseName.Replace('.omp', ''))$esc[0m"
             Write-Host ""
             & $poshCommand -config $($_.FullName) -pwd $PWD
             Write-Host ""
         }
+    }
     Write-Host ("-" * $consoleWidth)
     Write-Host ""
+    Write-Host "Themes location: $PSScriptRoot\themes"
+    Write-Host ""
     Write-Host "To change your theme, use the Set-PoshPrompt command. Example:"
     Write-Host "  Set-PoshPrompt -Theme jandedobbeleer"
     Write-Host ""