[Toolbox] Format lint run

[jasonLaster]

From @kdzwinel

my PR failed linting - that was a surprise to me because I saw there is a hook that runs tests before git push - not only it allowed me to push with linting errors, but it also hid them from me by allowing unit tests to run despite linting errors (last output in the terminal was a green checkmark coming from unit tests)

[jasonLaster]

Ideas:

• fail if any of the lints fail
• make a snazzy node script that makes it clear what will run and afterwards what the results were

[jasonLaster]

here's a patch to get started:

diff --git a/bin/lint.js b/bin/lint.js
new file mode 100644
index 0000000..19a97ad
--- /dev/null
+++ b/bin/lint.js
@@ -0,0 +1,5 @@
+const ps = require("child_process");
+
+
+ps.execSync("npm run lint-css -s;")
+ps.execSync("npm run lint-js -s")
diff --git a/package.json b/package.json
index 655bd69..689ef37 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "start": "node bin/dev-server",
     "start-app": "TARGET=application node bin/dev-server",
     "flow": "flow",
-    "lint": "npm run lint-css -s; npm run lint-js -s",
+    "lint": "node bin/lint",
     "lint-css": "stylelint src/components/*.css",
     "lint-js": "eslint src/**/*.js",
     "lint-fix": "npm run lint-js -- --fix",