feat(ostree-images): import river template files from wayblue

ostree-images/river/files/scripts/installproprietarypackages.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+# Tell build process to exit if there are any errors.
+set -oue pipefail
+
+curl -Lo /etc/yum.repos.d/negativo17-fedora-multimedia.repo https://negativo17.org/repos/fedora-multimedia.repo
+sed -i '0,/enabled=1/{s/enabled=1/enabled=1\npriority=90/}' /etc/yum.repos.d/negativo17-fedora-multimedia.repo
+
+rpm-ostree override replace \
+  --experimental \
+  --from repo='fedora-multimedia' \
+    libheif \
+    libva \
+    libva-intel-media-driver \
+    mesa-dri-drivers \
+    mesa-filesystem \
+    mesa-libEGL \
+    mesa-libGL \
+    mesa-libgbm \
+    mesa-libglapi \
+    mesa-libxatracker \
+    mesa-va-drivers \
+    mesa-vulkan-drivers \
+    gstreamer1-plugin-libav \
+    gstreamer1-plugin-vaapi