Allow the services that are configured by secrets to be disabled. (#3961)

* Make the map tiler key optional.

* Make the bug report URL optional.

* Make the sentry URL optional.

* Make the analytics configuration optional and handle consent taking Sentry into account.

* Stop prompting users to report crashes when Sentry is disabled.

ElementX/Sources/Mocks/BugReportServiceMock.swift

@@ -0,0 +1,20 @@
+//
+// 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
+
+extension BugReportServiceMock {
+    struct Configuration {
+        var isEnabled = true
+    }
+    
+    convenience init(_ configuration: Configuration) {
+        self.init()
+        
+        isEnabled = configuration.isEnabled
+    }
+}