Added a PowerShell script for "creating a new power plan"

docs/create-power-plan.md

@@ -0,0 +1,38 @@
+<#
+.SYNOPSIS
+	Create and Set Custom Power Plan
+.DESCRIPTION
+	Creates a custom power plan based on the active power plan, renames it, and sets it as the active power plan.
+    This PowerShell script:
+    1. Retrieves the active power plan GUID.
+    2. Duplicates the active power plan.
+    3. Renames the new power plan to a custom name.
+    4. Sets the newly created power plan as the active plan.
+.EXAMPLE
+	PS> ./create-custom-power-plan.ps1
+
+
+.LINK
+	https://github.com/Arash-Seifi/PowerShell
+.NOTES
+	Author: Arash Seifi | License: CC0
+#>
+
+
+try {
+    Add-Type -AssemblyName System.Speech
+    
+    $Synth = New-Object System.Speech.Synthesis.SpeechSynthesizer
+
+    $Synth.GetInstalledVoices() | 
+        Select-Object -ExpandProperty VoiceInfo | 
+        Select-Object -Property Name, Culture, Gender, Age
+    
+    # Indicate success and exit with status 0
+    exit 0
+} 
+catch {
+    "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+    
+    exit 1
+}