<mat-tab> Hide and Show Feature

#### Bug, feature request, or proposal:
hide/show behavior need to Provide in future release.

#### What is the expected behavior?

wanted to hide/show tab.
#### What is the current behavior?
currently you ppl are providing disabled feature so i wanted to hide/show tab.

#### What are the steps to reproduce?
provide api include hide/show feature.
#### What is the use-case or motivation for changing an existing behavior?
i need to show/hide tabs for that i need this feature instead of disabled api.

#### Which versions of Angular, Material, OS, TypeScript, browsers are affected?
i have used angular5 and Material design 5.2. please go through the below link for your reference.
https://material.angular.io/components/tabs/api

#### Is there anything else we should know?
apart from disable tab everything is working fine.

Start with the Angular Material tabs API linked in the issue and inspect the existing disabled-tab behavior. Determine the intended hide/show semantics and the affected tab implementation and tests; the work is done when the API and behavior are clearly specified and covered by tests.

Written by the indexing model from the issue text.