This does the following: * Moves quick suggest initialization from UrlbarQuickSuggest to QuickSuggest * Renames UrlbarQuickSuggest.sys.mjs to QuickSuggestRemoteSettingsClient.sys.mjs, so now this file is focused only on remote settings * Makes QuickSuggest create an instance of QuickSuggestRemoteSettingsClient and keep it as `QuickSuggest.remoteSettings` * Moves latency telemetry from UrlbarProviderQuickSuggest into QuickSuggestRemoteSettingsClient * Changes the ad hoc logger used in QuickSuggestRemoteSettingsClient to a proper urlbar-style logger * Updates consumers to use `QuickSuggest.remoteSettings` instead of UrlbarQuickSuggest Please see bug 1798595 for details. Depends on D160985 Differential Revision: https://phabricator.services.mozilla.com/D160986