move Runtime{State,Lchan} from pySim.filesystem to new pySim.runtime

Those two are really separate concepts, so let's keep them in separate
source code files.

Change-Id: I9ec54304dd8f4a4cba9487054a8eb8d265c2d340

pySim/sysmocom_sja2.py

@@ -21,6 +21,7 @@ from pytlv.TLV import *
 from struct import pack, unpack
 from pySim.utils import *
 from pySim.filesystem import *
+from pySim.runtime import RuntimeState
 from pySim.ts_102_221 import CardProfileUICC
 from pySim.construct import *
 from construct import *