[pgAdmin4][Patch]: RM#1366 - NOICONS switch for windows installer.

This patch includes:

- It would work for both normal and commandline mode when NOICONS argument is passed.

In Normal mode

Don't create a Start Menu folder option checkbox will be uncheck by default. i.e Start Menu folder would be created by default.

In commandline when NOICONS is passed

Don't create a Start Menu folder option checkbox will be checked by default.

i.e Start Menu folder will not be created by default.

Please Note : As per documentation of Inno tool.

User still have a option at runtime whether he want to create or not create Start Menu folder on runtime. NOICONS will just uncheck the checkbox.

Attached is the patch.