Add support for iOS PWA app bar

[keeganpotgieter]

Add the ability to match the colour of the iOS PWA application bar to the overlay colour to create a more native feel.

Examples

Without iOS App Bar Support

With iOS App Bar Support

Solution

• User needs these meta tags
  • <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
  • <meta name="apple-mobile-web-app-capable" content="yes" />
• Changes made in vaul/src/index.tsx to dynamically change the background colour to match overlay background colour
• Will also solve some of the issues with this issue https://github.com/emilkowalski/vaul/issues/259

[Dearest]

Cool, this is exactly what I need.

[Dearest]

maybe， can solve this issue #199 too

[keeganpotgieter]

maybe， can solve this issue #199 too

It seems like #199 isn't an issue with body backgrounds.