Chore: Set min. supported version for Apple

[marandaneto]

What does this PR do?

Set min. supported version for Apple (iOS and tvOS): 11

Where should the reviewer start?

How should this be manually tested?

Any background context you want to provide?

Cocoapods warning:

[!] Automatically assigning platform iOS with version 11.0 on target CocoapodsExample because no platform was specified. Please specify a platform for this target in your Podfile. See https://guides.cocoapods.org/syntax/podfile.html#platform.

Also all examples and Swift PM were mismatching the min. supported version.

What are the relevant tickets?

Screenshots or screencasts (if UI/UX change)

Questions:

• Does the docs need an update?
• Are there any security concerns?
• Do we need to update engineering / success?