Split out style from LocationSupportableMapView

[julianrex]

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Fixes: < Link to related issues that will be fixed by this pull request, if they exist >

Pull request checklist:

• Briefly describe the changes in this PR.
• Apply changelog label ('breaking change', 'bug 🪲', 'build', 'docs', 'feature 🍏', 'performance ⚡', 'testing 💯') or use the label 'skip changelog'
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Summary of changes

This removes LocationSupportableMapView.style, moving it to a new LocationStyleDelegate (naming mirroring AnnotationStyleDelegate.

This is a prelude to being able to move Style from MapView to MapboxMap.

[nishant-karajgikar]

Hmm it feels like LocationSupportableMapView is basically obsolete?

This is what locationSupportableMapView currently has:

public protocol LocationSupportableMapView: UIView {

    /// Matching the style property in `MapView`
    var style: Style! { get }

    /// Returns the screen coordinate for a given location coordinate (lat-long)
    func screenCoordinate(for locationCoordinate: CLLocationCoordinate2D) -> ScreenCoordinate

    /// Allows the `LocationSupportableMapView` to subscribe to a delegate
    func subscribeRenderFrameHandler(_ handler: @escaping (MapboxCoreMaps.Event) -> Void)

    /// Allows the `LocationSupportableMapView` to subscrive to a delegate function and handle style change events
    func subscribeStyleChangeHandler(_ handler: @escaping (MapboxCoreMaps.Event) -> Void)

    /// Gets meters per point at latitude for calculating accuracy ring
    func metersPerPointAtLatitude(latitude: CLLocationDegrees) -> CLLocationDistance

}

All these properties will soon be available on mapboxMap (if not alread -- like the event api)..

[julianrex]

@nishant-karajgikar Yes, I think it will soon disappear, or mutate.