Add Coriolis dir that poetry needs, along with base __init__.py

Coriolis/__init__.py

@@ -0,0 +1,7 @@
+#This is needed for poetry to recognise the top level module
+import os
+
+__all__ = ["crlcore"]
+coriolis_package_dir = os.path.abspath(os.path.dirname(__file__))
+
+os.environ["CORIOLIS_TOP"] = coriolis_package_dir