Rename map identifiers to tileset identifiers

[1ec5]

Map IDs are being renamed to tileset IDs across the board. The only impacts to this library are the ClassicSnapshotOptions.mapIdentifiers property and associated initializer arguments:

MapboxStatic.swift/MapboxStatic/ClassicSnapshotOptions.swift

Line 71 in 413173c

@objc open var mapIdentifiers: [String]

MapboxStatic.swift/MapboxStatic/ClassicSnapshotOptions.swift

Line 149 in 413173c

@objc public init(mapIdentifiers: [String], size: CGSize) {

/cc @mapbox/maps-ios @brsbl

[zugaldia]

/cc: @osana for Android (MAS).

[1ec5]

mapbox/mapbox-java#1021 tracks the changes needed in the Java SDK. As far as I can tell, the Java SDK only supports the modern Static API, not the classic one that uses map tileset IDs, so only the Tilequery API code is affected.