Use ID_LIKE when an ID doesn't exactly match for unsupported distros #401
Description
I tried doing the installation on CachyOS, an Arch derivative that is near identical to Arch (less variation than Manjaro, similar to EndeavourOS). The installation fails because the ID reported in /etc/os-release is not exactly arch, manjaro, or endeavouros. However, ID_LIKE is set to arch, which is enough information to determine the package management situation.
The current behavior is to hard fail whenever attempting to install on a non-whitelisted OS. I would expect to see a warning, not a failure that requires a user to modify the installation script or /etc/os-release.