feat: Install script help

Closes https://github.com/espressif/esp-idf/issues/11231

install.ps1

@@ -1,6 +1,16 @@
 #!/usr/bin/env pwsh
+
+param(
+    [Switch]$h
+)
+
 $IDF_PATH = $PSScriptRoot
 
+if($h){
+python "$IDF_PATH/tools/install_util.py" print_help ps1
+Exit
+}
+
 $TARGETS = (python "$IDF_PATH/tools/install_util.py" extract targets "$args")
 
 Write-Output "Installing ESP-IDF tools"