Support watch for cockpit development via make watch

Makefile

@@ -66,6 +66,9 @@ dist/po.%.js: po/%.po $(NODE_MODULES_TEST)
 $(WEBPACK_TEST): $(NODE_MODULES_TEST) $(shell find src/ -type f) package.json webpack.config.js $(patsubst %,dist/po.%.js,$(LINGUAS))
 	NODE_ENV=$(NODE_ENV) npm run build
 
+watch:
+	NODE_ENV=$(NODE_ENV) npm run watch
+
 clean:
 	rm -rf dist/
 	[ ! -e cockpit-$(PACKAGE_NAME).spec.in ] || rm -f cockpit-$(PACKAGE_NAME).spec

package.json

@@ -7,6 +7,7 @@
   "author": "",
   "license": "LGPL-2.1",
   "scripts": {
+    "watch": "webpack -w",
     "build": "webpack",
     "eslint": "eslint --ext .jsx --ext .es6 src/",
     "eslint:fix": "eslint --fix --ext .jsx --ext .es6 src/"