feat: add notification controls (#3723)

• feat(ios): add showNotificationControls prop

• feat(android): add showNotificationControls prop

• add docs

• feat!: add metadata property to srouce

This is breaking change for iOS/tvOS as we are moving some properties, but I believe that this will more readable and more user friendly

• chore(ios): remove UI blocking function

• code review changes for android

• update example

• fix readme

• fix typos

• update docs

• fix typo

• chore: improve sample metadata notification

• update codegen types

• rename properties

• update tvOS example

• reset metadata on source change

• update docs

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Co-authored-by: Olivier Bouillet freeboub@gmail.com