Added an extension to overwrite the default keyboard layout to en-US (#167)

* Create setkb.sh

* Update setkb.sh

added a delay after the powershell to allow the execution of the powershell command.

* Update setkb.sh

Modified so that its even easier.

SETKB START will set the keyboard to a en-US keyboard layout.
SETKB DONE will reset the keyboard to the default layout based on the culture settings.
SET xx-XX will set the keyboard layout to whatever is specified as xx-XX

library/extensions/setkb.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# SETKB v2.0 by @elkentaro
+# Simplifies executing commands from HID attacks for different language keyboards. on Windows by using Powershell.
+# Usage: SETKB en-US [give the command the 2 letter combination of keyboard settings]
+#
+# Examples:
+# SETKB START (set the keyboard layout to a US keyboard layout)
+# SETKB DONE (set the keyboard layout to the default keyboard determined by the OS language settings)
+# SETKB xx-XX (overwrite the keyboard layout to whatever keyboard layout you need, you will need the [lanugage].json file to run Ducky scripts) 
+
+
+function SETKB() {
+   local state=$1
+   shift
+   
+   [[ -z "$state" ]] && exit 1 # state keyboard parameter must be given.
+   
+   case "$state" in
+      'START')
+         QUACK GUI r
+         QUACK DELAY 500
+         QUACK STRING "powershell.exe Set-WinUserLanguageList -LanguageList en-US -force;"
+         QUACK ENTER
+         QUACK DELAY 1500
+
+         ;;
+      'DONE')
+         QUACK GUI r
+         QUACK DELAY 500
+         QUACK "STRING powershell.exe \$back2kb=(get-Culture | Select -ExpandProperty Name) ; Set-WinUserLanguageList -LanguageList \$back2kb -force; "
+         QUACK ENTER
+         QUACK DELAY 1500
+
+         ;;    
+         
+      *)
+         QUACK GUI r
+         QUACK DELAY 500
+         QUACK "STRING powershell.exe Set-WinUserLanguageList -LanguageList $state -force"
+         QUACK ENTER
+         QUACK DELAY 1500
+
+         ;;    
+
+
+
+   esac
+}
+
+export -f SETKB