[CI:BUILD] GHA to build podman machine images

[NO NEW TESTS NEEDED]

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>

.github/workflows/fcos-machine-images.yml

@@ -0,0 +1,29 @@
+name: Build FCOS image with packages from rhcontainerbot/podman-next
+
+on:
+  pull_request:
+    branches:
+      - main
+
+env:
+  IMAGE_NAME: fcos
+  # IMAGE_ARCHS has to be comma separated
+  IMAGE_ARCHS: amd64, arm64
+  IMAGE_REGISTRY: quay.io/podman
+  COPR_OWNER: rhcontainerbot
+  COPR_PROJECT: podman-next
+
+jobs:
+  fcos-podman-next-image-build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Install qemu dependency
+      run: |
+        sudo apt update
+        sudo apt -y install qemu-user-static
+
+    - name: Clone and set up cosa
+      # run: 
+
+    - name: Build vhdx and qcow2 images

.github/workflows/fcos-podman-next-build.yml

@@ -63,6 +63,11 @@ jobs:
           org.opencontainers.image.description=FCOS image with rpms from rhcontainerbot/podman-next copr
           org.opencontainers.image.revision=${{ github.sha }}
 
+    # TODO: Build qemu and vhdx images with cosa
+    # Is that doable here itself?
+    # 1. Clone cosa
+    # 2. cosa fetch
+    # 3. cosa build qcow, hyperv
 
     - name: Echo Outputs
       run: |