feat: new starter sidemenu with tabs

[Saqib92]

New Starter template for Ionic 4 - Sidemenu with Tabs.

New starter template required for ionic 4 contains sidemenu with tabs for PWA and Mobile Applications.

[Saqib92]

this is just manual Work around for this issue.
Click here

[Saqib92]

any update? or should I close this?

[mhartington]

Pull requests are always welcomed