manifests: Split out firmware, do use bootable-rpm-ostree

tier-1/firmware.yaml

@@ -0,0 +1,5 @@
+ packages:
+  # linux-firmware now a recommends so let's explicitly include it
+  # https://gitlab.com/cki-project/kernel-ark/-/commit/32271d0cd9bd52d386eb35497c4876a8f041f70b
+  # https://src.fedoraproject.org/rpms/kernel/c/f55c3e9ed8605ff28cb9a922efbab1055947e213?branch=rawhide
+  - linux-firmware

tier-1/manifest.yaml

@@ -1,6 +1,8 @@
 
 include:
   - manifest-tier-0.yaml
+  - bootable-rpm-ostree.yaml
+  - firmware.yaml
   - networking-tools.yaml
   - system-configuration.yaml
   - user-experience.yaml