Add example.py for usage and testing. Still al ot of changes and docu…

…mentation to do, but it definitely works in this form.

src/tablestream/example.py

@@ -0,0 +1,9 @@
+from kaitaistruct import KaitaiStream
+from metadata import Metadata
+
+# Proof of concept example to print all the data manager name
+
+with KaitaiStream(open("data/ea25_cal_small_before_fixed.split.ms/table.dat", "rb")) as _io:
+    m = Metadata(_io)
+    for manager in m.desc.table.columns.storage.managers:
+        print(manager.cxx_type.value)