* add flag for auto create groups
* fixup! add flag for auto create groups
* sync missing groups
Also added a regex filter to filter out groups that are not
important
* feat: add display_name field to groups
This is a non-unique human friendly group name for display
purposes. This means a display name can be used instead of
using an environment var to remap groups with OIDC names to
Coder names. Now groups can retain the OIDC name for mapping,
and use a display name for display purposes.