added a release flatpack script

(cherry picked from commit e70a7ba)

bin/release-flatpack.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+if [[ $# -eq 0 ]] ; then
+    echo "Missing argument of new version"
+    exit 1
+fi
+
+VERSION=$1
+
+if ! [[ ${VERSION} =~ ^[0-9]{1,2}\.[0-9]{1,2}\.[0-9]{1,2}(-.+)?$ ]] ;
+then
+    echo "Version ${VERSION} isn't in format X.Y.Z"
+    exit 1
+fi
+
+VERSION_DATE=$(git log -1 --format=%aI v${VERSION} | cut -c -10)
+VERSION_COMMIT=$(git rev-list -n 1 v${VERSION})
+
+echo "Updating files with version ${VERSION}, date ${VERSION_DATE} and commit ${VERSION_COMMIT}"
+
+# expecting the directory at a specific path
+cd ~/trilium-flathub
+
+if ! git diff-index --quiet HEAD --; then
+    echo "There are uncommitted changes"
+    exit 1
+fi
+
+xmlstarlet ed --inplace --update "/component/releases/release/@version" --value "${VERSION}" --update "/component/releases/release/@date" --value "${VERSION_DATE}" ./trilium-flathub/com.github.zadam.trilium.metainfo.xml
+
+yq --inplace "(.modules[0].sources[0].tag = \"v${VERSION}\") | (.modules[0].sources[0].commit = \"${VERSION_COMMIT}\")" ./trilium-flathub/com.github.zadam.trilium.yml
+
+git commit -m "release $VERSION"
+git push