Add a feature flag for spaces. (#4429)

* Remove the huge conditional compilation block on AppSettings.

It is still required for the ElementCallBaseURL however.

* Add a feature flag for spaces.

ElementX/Sources/Application/Settings/MapTilerConfiguration.swift

@@ -0,0 +1,25 @@
+//
+// Copyright 2025 New Vector Ltd.
+//
+// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
+// Please see LICENSE files in the repository root for full details.
+//
+
+import Foundation
+
+/// All of the configuration necessary to use MapTiler maps.
+///
+/// The style IDs need to be generated with the account that the API key belongs to. For more information read
+/// [FORKING.md](https://github.com/element-hq/element-x-ios/blob/develop/docs/FORKING.md#setup-the-location-sharing)
+struct MapTilerConfiguration {
+    let baseURL: URL
+    /// The API key for fetching map tiles. When not set, location sharing will be disabled and
+    /// any received locations will be shown in the timeline with a generic blurred map image.
+    let apiKey: String?
+    /// A MapLibre style ID for a light-mode map.
+    let lightStyleID: String
+    /// A MapLibre style ID for a dark-mode map.
+    let darkStyleID: String
+    
+    var isEnabled: Bool { apiKey != nil }
+}