Added information on installing Template Migration Utility.
Added information on installing Publishing Solutions.
Added support for Windows Server 2022.
Added support for Windows 11.
Updated the readiness checklist for various components.
Added information on the following:
Upgrading database
Installing Publishing Authenticator
Initial document release.
Consolidated the Installation Guide for all PPR components.
Modified .Net Framework version to 4.8 for Publishing Platform Manager, as recommended pre-requisite.