Three new nodes for IfcSverchok. By ID, By Guid, and By Type

src/ifcsverchok/__init__.py

@@ -26,6 +26,9 @@ def nodes_index():
         ("ifc.read_file", "SvIfcReadFile"),
         ("ifc.write_file", "SvIfcWriteFile"),
         ("ifc.create_entity", "SvIfcCreateEntity"),
+        ("ifc.by_id", "SvIfcById"),
+        ("ifc.by_guid", "SvIfcByGuid"),
+        ("ifc.by_type", "SvIfcByType"),
     ])]
 
 def make_node_list():