* chore: add /v2 to import module path
go mod requires semantic versioning with versions greater than 1.x
This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```
Migrate generated files to import /v2
* Fix gen
* 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.
