greetd-gtkgreet-xfce-wayland-1.0-bp160.1.2

- Fix correct path to gtkgreet in config.toml
  drop accidental %bindir macro

- Add conflict on openSUSEway

- Conflict with greetd-branding-upstream
- Supply environments and config.toml as Sources
- Use config(noreplace) since we now own these files

- Do not use config(noreplace) that would not work in our case

- Initial package for greetd using gtkgreet and XFCE Wayland session
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