vkd3d-1.2-bp154.1.20

- added also shader library to baselibs.conf (bsc#1176894)

- updated to 1.2
  - Availability of libvkd3d-shader as a public library.
  - Support for tessellation shaders.
  - Version 1.1 root signatures.
  - Stream output support.
- added gpg signature and keyring.

- updated baselibs requires to allow better wine 32bit dependencies (bsc#1172310)

- updated to 1.1
  - Initial support for placed resources.
  - MoltenVK support.
  - Support for geometry shaders.

- Fix RPM groups. Drop redundant ldconfig requires (they are
  implicit).

- ininital vkd3d library, Direct3D 12 to Vulkan translation library