convert dark-theme utility to Powershell script

scripts/enable-dark-theme.ps1

@@ -0,0 +1,13 @@
+#   Description
+# This script will set registry keys so Applications using the Appx framework
+# will use the dark theme instead of the default light one.
+
+Import-Module -DisableNameChecking $PSScriptRoot\..\lib\reg-helper.psm1
+
+Import-Registry(@"
+[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
+"AppsUseLightTheme"=dword:00000000
+
+[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
+"AppsUseLightTheme"=dword:00000000
+"@)

utils/dark-theme.reg

@@ -1,7 +0,0 @@
-Windows Registry Editor Version 5.00
-
-[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
-"AppsUseLightTheme"=dword:00000000
-
-[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
-"AppsUseLightTheme"=dword:00000000