Switch to api.openstreetmap.org API host

[danieldegroot2]

Use api.openstreetmap.org/api/ -and HTTPS- instead of www.openstreetmap.org/api/*.

(Is: openstreetmap/operations#951)

[7h30n3]

Tested and LGTM!

[Robbendebiene]

Just as a reminder for us: We also would have to update

OpenStop/lib/commons/osm_config.dart

Lines 15 to 17 in 2a93818

	const osmServer = bool.fromEnvironment('IS_RELEASE', defaultValue: false)
	? 'www.openstreetmap.org'
	: 'master.apis.dev.openstreetmap.org';

This global variable is used by the OAuth OSMAuthenticationAPI as well, which as some comments state does not work on api.openstreetmap.org

It is also used to link to the user profile which will likewise break:

OpenStop/lib/api/user_account_service.dart

Lines 81 to 84 in 2a93818

	return await launchUrl(
	Uri.https(osm_config.osmServer, '/user/${_authenticatedUser.value!.name}'),
	mode: LaunchMode.externalApplication,
	);

Additionally an answer to openstreetmap/operations#951 (comment) would be much appreciated.