Add insights checker

[barryvdh]

This adds https://github.com/dsentker/phpinsights by @dsentker and checks the Google Pagespeed Insights API for mobile and desktop, when the key is set.

It also shows the screenshots from mobile/desktop and the speed/usability scores.

[barryvdh]

Example:

[hbakhtiyor]

i think better to use from client side directly, not to overload server

[barryvdh]

@hbakhtiyor What do you mean, calling the Insights API? That shouldn't be very intensive..

@phanan What do you think?

[hbakhtiyor]

@barryvdh yeah, calling directly to Insights API

[phanan]

Calling the API shouldn't be a problem.

[barryvdh]

No indeed.

But I meant, what do you think of the rest of the PR?

[phanan]

Oh, sorry. Actually IMO breaking the insight results into individual items is a bit too much. I'd prefer using the score for the headline and the rest for expanded details.

[phanan]

Also, why do we have two Levels::WARNING again?

[phanan]

And sorry for not following up the repo very closely these days, I currently have lots of personal stuff to deal with :(

[barryvdh]

Ah right, one should be ERROR indeed.

We could be to just show the once that are failing, not all the green ones.

Or perhaps add a different options to check using kupo rules, but also a check for Insights. The interface is very nice for it imho :)

[barryvdh]

And no rush, take your time :)