Allow user to select component owner

[yangcao77]

This PR removes duplicated files and also removes the hard-coded owner from the template and catalog-info.
Instead, added a owner picker to allow user to select component owner from user and group. The catalog registered will be reflected with that owner information

for example, if select guest group, the generated catalog-info.yaml will be with spec:

spec:
  type: service
  owner: group:default/guests 
  lifecycle: experimental

and the catalog registered:

[yangcao77]

@jduimovich PTAL. let me know if you have any concerns with this change. Thx!

[jduimovich]

This is fine.
In future we will likely need to get the user/owner from whoever is logged into backstage /openshift