[Standalone PC] Install the combine in a global location

[jmgrady]

When installing The Combine on a standalone PC, it is installed in ${HOME}/combine. It should be in a global location, e.g. /opt/thecombine.

Some challenges for moving the combine scripts to /opt/thecombine are that the install process creates the helm chart files from templates and these are owned by root. This causes an error if a user tries to re-run the installation.