tool: Add script to generated all localizations

tool/generate-localizations.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -euxo pipefail
+cd "$(dirname "$0")/.."
+
+for package in packages/neon/*; do
+  (
+    cd "$package"
+    fvm flutter gen-l10n
+  ) &
+done
+
+wait
+
+./tool/format.sh