add gnss_models, sv_models to init

Author: betaBison

gnss_lib_py/__init__.py

@@ -14,7 +14,8 @@
 
 from gnss_lib_py.utils.coordinates import *
 from gnss_lib_py.utils.filters import *
-from gnss_lib_py.utils.sim_gnss import *
+from gnss_lib_py.utils.gnss_models import *
+from gnss_lib_py.utils.sv_models import *
 from gnss_lib_py.utils.time_conversions import *
 from gnss_lib_py.utils.visualizations import *