Add new SUSE Banner and Login banners.

PRs that contribute (to be reviewed and merged in this order):

1. Update SUSE banner and support left-justified text overlay #15716
2. Update SUSE login banner and support custom image style #15776
3. Improve login screen left-hand-side for Rancher Prime #15763

Optionally:

1. Add SUSE font and wire in for SUSE brand #15720