Animate camera to LatLngBounds

[michalgwo]

• Android target - works fine
• iOS target - unfortunately I don't have a Mac right now, so I can't implement it. It looks like camera:fittingCoordinateBounds:edgePadding: or setVisibleCoordinateBounds is the way to go
• JS target - works fine, but FitBoundsOptions doesn't have a duration parameter, so currently it has no effect on JS. It was my first time working with JS target, so I'm unsure if I've done everything right.
• Desktop target - the other animateCameraPosition() is not implemented on the desktop, so I left it unimplemented as well

Example of usage:

cameraState.animateTo(
  LatLngBounds(
    northEast = Position(20.009155194730226, 50.06807238031317),
    southWest = Position(19.91854897235649,50.04007893350368)
  ),
  padding = PaddingValues(50.dp),
  tilt = 0.0,
  bearing = 0.0
)