[ios,macos] multipolygon coordinate (#8713)
* [ios] MGLMultiPolygon's coordinate property implemented
* [ios,macos] Add polylabalel to project config
* [ios,macos] Change coordinate property for MGLPolyline,MGLPolygon,MGLMultiPolygon
* [macos] Change project configuration to support polilabel
* [ios,macos] Add MGLLocationCoordinate2DFromPoint
* [ios, macos] Update changelogs
* [ios, macos] remove unnecesary variables
* [ios, macos] Add radians conversions
* [ios, macos] Add coordinate calc to MGLPolyline
* [ios, macos] Move radian fuctions to MGLGeometry_Private.h
* [ios, macos] Fix code style
* [ios, macos] Fix code indentation
* [ios, macos] Fix radian per meters constant
* [ios, macos] Add test scenarios to testPolyline
* [ios, macos] Fix test accuracy