Add and use new logger

This helps provider better logs.  With this, the user can now run
with `-v` for verbose logs, use more `-v` to be more verbose,
eg `calls -vvvvv` log shall be very verbose

src/meson.build

@@ -103,6 +103,7 @@ calls_sources = files(['calls-message-source.c', 'calls-message-source.h',
                        'calls-contacts-provider.c', 'calls-contacts-provider.h',
                        'calls-best-match.c', 'calls-best-match.h',
                        'calls-in-app-notification.c', 'calls-in-app-notification.h',
+                       'calls-log.c', 'calls-log.h',
                        'calls-manager.c', 'calls-manager.h',
                        'calls-notifier.c', 'calls-notifier.h',
                        'calls-contacts-box.c', 'calls-contacts-box.h',