[FEATURE REQUEST] Add option to windows uninstaller to remove salt dir

[doesitblend]

Is your feature request related to a problem? Please describe.
When uninstalling Salt with C:\salt\uninst.exe /S the C:\salt is left with the configuration directory in tact. This feature is possible when calling the uninstaller with no options and going through the prompts.

Describe the solution you'd like
The request is to have an option added to the uninstaller that will allow removing this directory.

[twangboy]

Two options have been added to the Uninstaller:

• /delete-install-dir will delete the installation directory that contains the config and pki directories in an old-style installation where everything is in C:\salt
• /delete-root-dir will delete the root directory containing config and pki in new-style installations where the root directory is in ProgramData

These options are available in the Silicon release

#60267

https://github.com/saltstack/salt/blame/master/pkg/windows/installer/Salt-Minion-Setup.nsi#L1767