feat(windows): add interactive/dry-run modes to minimal rollback + update README

Author: yaravind

FAQ.md

@@ -5,7 +5,11 @@ ERROR: winget (App Installer) is not installed.
 ![winget not installed](assets/issue-winget-not-installed.png)
 
 **Solution**
-Download the installer for the latest version of App Installer from Microsoft website(https://learn.microsoft.com/en-us/windows/msix/app-installer/install-update-app-installer) and rerun the script.
+
+1. Make sure if App Installer is properly configured in the `PATH` environment variable. Open the PowerShell and run `echo $env:PATH`. You should see something like `C:\Users\<yourname>\AppData\Local\Microsoft\WindowsApps`.
+2. If you don't see the WindowsApp path, add it (in Powershell): `setx PATH $env:PATH;C:\Users\$env:USERNAME\AppData\Local\Microsoft\WindowsApps"`.
+3. Restart the Powershell and run `winget --version`.
+4. If you still see the issue the, download the installer for the latest version of App Installer from Microsoft website(https://learn.microsoft.com/en-us/windows/msix/app-installer/install-update-app-installer) and rerun the script.
 
 Since this is a Windows application you didn't require admin rights to run it.