Automate version tags for each build

scripts/create_version_tag.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+BUILD_FILE="$ROOT_DIR/android/app/build.gradle.kts"
+
+version_name="$(grep -E 'versionName = "[0-9]+\.[0-9]+\.[0-9]+"' "$BUILD_FILE" | head -n1 | sed -E 's/.*versionName = "([0-9]+\.[0-9]+\.[0-9]+)"/\1/')"
+tag_name="v${version_name}"
+
+if git -C "$ROOT_DIR" rev-parse -q --verify "refs/tags/${tag_name}" >/dev/null; then
+  echo "Tag ${tag_name} already exists"
+  exit 0
+fi
+
+git -C "$ROOT_DIR" tag -a "$tag_name" -m "Release ${tag_name}"
+echo "Created tag ${tag_name}"