[674] google tag manager example

it's almost the most developer friendly technology ever,, in my opinion .. keep moving forward.

Steps to reproduce i'v tryed to add https://tagmanager.google.com to my nuxt app, followed this example https://nuxtjs.org/faq/google-analytics here and it works fine for just google analytics,, unlike analytics .. google tag manager requires two steps to include it in your app the first is a head script tag, the other is a noscript tag needs to be placed immediately after body opening tag. this is the script tag included as explaned in the analytics example:

this the included noscript tag:

<noscript>
    <iframe src="//www.googletagmanager.com/ns.html?id=GTM-XXXXXX" height="0" width="0" style="display:none;visibility:hidden"></iframe>
</noscript>

it works but with no effect router.afterEach() and it causes this error

thanks in advance ...