Fix: Rust-GBT packaging needs fixing

backend/npm_package.sh

@@ -0,0 +1,14 @@
+#/bin/sh
+set -e
+
+npm run build
+# Remove previous package folder
+rm -rf package
+# Move JS and deps
+mv dist package
+mv node_modules package
+# Remove symlink for rust-gbt and insert real folder
+rm package/node_modules/rust-gbt
+mv rust-gbt package/node_modules
+# Clean up deps
+npm run package-rm-build-deps