[core] Re-enable preliminary module loading (stubbed)

Add logic for parsing commandline options, and a preliminary stub for
loading modules.

Note: The idea is that core.module.load() will return a valid, but
empty, module that displays an error, if the module cannot be loaded

modules/test.py

@@ -0,0 +1,14 @@
+# pylint: disable=C0111,R0903
+
+"""Test module
+"""
+
+import bumblebee.engine
+
+class Module(bumblebee.engine.Module):
+    def __init__(self, engine, config):
+        super(Module, self).__init__(engine, config,
+            bumblebee.output.Widget(full_text="test")
+        )
+
+# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4