feat: change file structure to make building RPMs possible + package wallpapers as RPM

Containerfile

@@ -1,15 +1,18 @@
 FROM registry.fedoraproject.org/fedora:latest AS builder
 
-RUN dnf update -y && dnf install --disablerepo='*' --enablerepo='fedora,updates' --setopt install_weak_deps=0 --nodocs --assumeyes git wget unzip && dnf clean all
+RUN dnf update -y && dnf install --disablerepo='*' --enablerepo='fedora,updates' --setopt install_weak_deps=0 --nodocs --assumeyes git wget unzip make rpm-build && dnf clean all
 
-RUN mkdir -p /tmp/ublue-os/files/usr && mkdir /tmp/ublue-os/rpms
-
-COPY usr /tmp/ublue-os/files/usr
+RUN mkdir -p /tmp/ublue-os/files/usr /tmp/ublue-os/{rpms,build}
+COPY files /tmp/ublue-os/files
+COPY build /tmp/ublue-os/build
 ADD fetch.sh /tmp/fetch.sh
 
 RUN chmod +x /tmp/fetch.sh && \
 	/tmp/fetch.sh
 
+# TODO: Eventually make this more flexible to include more projects
+RUN cd /tmp/ublue-os/build/backgrounds && make && cp /tmp/ublue-os/rpmbuild/RPMS/noarch/*.rpm /tmp/ublue-os/rpms
+
 FROM scratch
 
 COPY --from=builder /tmp/ublue-os/files /files