provide slowdebug and fastdebug subpackages

This issue was pinpointed as regression in https://github.com/adoptium/installer/issues/848

Fedora and Rhel contains slow and fast debug subpakcages. This is very cool ferature in case JDK goes wild, as those are from same buildroot, which would be otherwise unreachable. Considering how differently are temurin jdks built, it may be better to provide different workaround then just implemnt fast and slow debug suibpkgs - eg links to slow/fastdebug tarballs....

Slightly more info in https://github.com/adoptium/installer/issues/848

@jiekang fyi!

Start by reading regression issue 848 and the installer repository's packaging flow. Determine whether the requested result is slowdebug and fastdebug subpackages or links to corresponding tarballs, then document the chosen workaround and verify that it supports the Fedora and RHEL use case described.

Written by the indexing model from the issue text.