Added a meta value for 'mobile-web-app-capable' to support Chrome on Android

According to the [Add to Homescreen](https://developers.google.com/chrome/mobile/docs/installtohomescreen) feature of Chrome Android M31, in order to support homescreen apps:

>Chrome will look for the following meta tag in the \<head\> element of the web-page:

>\<meta name="mobile-web-app-capable" content="yes">

Additionally,

>Chrome will also allow Web Apps to launch in "App mode" if they embed a meta tag using the "apple-mobile-web-app-capable" name. Chrome will stop supporting this usage in an upcoming release.

This PR is an attempt to future proof the repo as well as support a feature that will soon become more common on Android devices.