service-providers: Add parsing for service provider info

We currently only need the emergency number information

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Part-of: <https://gitlab.gnome.org/GNOME/calls/-/merge_requests/790>

src/calls-service-providers.h

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2025 The Phosh.mobi e.V.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#pragma once
+
+#include <gio/gio.h>
+
+G_BEGIN_DECLS
+
+void        calls_service_providers_get_emergency_info (const char          *serviceproviders,
+                                                        GCancellable        *cancellable,
+                                                        GAsyncReadyCallback  callback,
+                                                        gpointer             user_data);
+GHashTable *calls_service_providers_get_emergency_info_finish (GAsyncResult *res,
+                                                               GError      **error);
+GHashTable *calls_service_providers_get_emergency_info_sync (const char *serviceproviders,
+                                                             GError    **error) G_GNUC_WARN_UNUSED_RESULT;
+
+
+G_END_DECLS