Actually, finally, properly put new languages in the LINGUAS file

update_translation.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Credit: https://gitlab.gnome.org/World/Upscaler/-/blob/main/update_translation.sh?ref_type=heads
+
+PROJECT_NAME="warehouse"
+BUILD_DIR="translation-build/"
+PO_DIR="po/"
+LINGUAS_FILE="${PO_DIR}LINGUAS"
+
+# Update the LINGUAS file
+rm "${LINGUAS_FILE}"
+for po_file in "${PO_DIR}"*.po; do
+	lang=$(basename "${po_file}" .po)
+	echo "${lang}" >> "${LINGUAS_FILE}"
+	echo "Wrote ${lang} to ${LINGUAS_FILE}"
+done
+echo -e "Updated ${LINGUAS_FILE}\n"
+
+
+# Update the translation template
+if [ -d "${BUILD_DIR}" ]; then
+	rm -r "${BUILD_DIR}"
+fi
+meson "${BUILD_DIR}"
+meson compile -C "${BUILD_DIR}" "${PROJECT_NAME}-pot"
+rm -r "${BUILD_DIR}"
+
+
+unset PROJECT_NAME
+unset BUILD_DIR
+unset PO_DIR
+unset LINGUAS_FILE