Menu close event on mobile screen.

### Issue type

**I'm submitting a ...** (check one with "x")

* [ ] bug report
* [x] feature request
* [ ] question about the decisions made in the repository

### Issue description

184/5000
I raise issues after much effort.

The menu does not close when clicking on a page that is already open on mobile.
The user has no response and is frustrated.

You must press the menu button at the top, but the menu closes.

Clicking a page outside the menu does not close the menu.

Is there any way to fix this event?

Thank you.

### Other information:
Test in the latest version

**npm, node, OS, Browser**
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**Angular, Nebular**
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