fix: gets NetBackup install path from registry and sets env variable with that value so the perl scripts can read that instead of having hardcoded install path
remove hard coded NBU install path, fetch from windows_wrapper.bat instead (which pulls INSTALLDIR from the registry)
added bandwidthmgr.pl
wip
Merge branch 'wip-bandwidthmgr.pl' of https://github.com/InnovationGroupSE/netbackup-scripts into wip-bandwidthmgr.pl