Changes for Xcode 14, iOS 16, new devices

[vincentneo]

Changes:

• Minimum deployment for iOS and watchOS to comply with Xcode 14.
  • iOS 9 ~> iOS 11
  • watchOS 2 ~> watchOS 4
  • Fix deprecation notices brought by min deployment change
• Change modern MKCompassButton implementation added in #219, to rectify inability to use @available on lazy variables in Xcode 14
• Fix #232, overlay issue specific to iOS 16 only, where third party tiles will always try to be top most overlay
• Changes to MapCache, using a branch for now
• Changes to CoreGPX, using a branch for now
• Fix #233, by extensively changing top elements from fixed frame initialisations to using constraints respecting safe areas
• Rectify warnings, still 1 CoreLocation UI unresponsiveness left.

[cs4alhaider]

@vincentneo thank you for this, wouldn't be better if this be merged with Xcode 14 branch?

[vincentneo]

@cs4alhaider I will be merging this to master branch today.

[vincentneo]

Considering that iOS 16.0.x and 16.1 has been out for a while, and considering no review from @merlos, I will merge this to master.

It will be using a fork of MapCache for the time being, as I deem it important enough for iOS 16 users, since it fixes #232.