Add script to automate update of version, currently limited to apps

scripts/version-update.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -e
+
+# This should be the _next_ epoch version
+version=1.0.4
+subject="Epoch ${version} version update"
+description="Generated by cosmic-epoch scripts/version-update.sh"
+
+repos=(
+    cosmic-edit
+    cosmic-files
+    cosmic-player
+    cosmic-store
+    cosmic-term
+)
+
+for repo in "${repos[@]}"
+do
+    git submodule update --recursive "${repo}"
+    pushd "${repo}"
+    git fetch origin
+    git checkout -B epoch-update origin/master
+    git reset --hard
+    if [ "$(dpkg-parsechangelog --show-field Version)" != "${version}" ]
+    then
+        dch --newversion "${version}" --distribution noble "${subject}"
+    fi
+    cargo set-version "${version}"
+    cargo update
+    git commit -a -m "${subject}" -m "${description}"
+    git push -f -u origin epoch-update
+    gh pr create \
+        --title "${subject}" \
+        --body "${description}" \
+        --assignee "@me" \
+        --reviewer "pop-os/engineering" \
+        --reviewer "pop-os/quality-assurance"
+    popd
+done