So that import xlte.abc resolves to xlte/abc.py

Based on similar top-level import redirector from wendelin.core
See nexedi/wendelin.core@e870781d for
context and links in added code for further details.

Stub setup.py, README/CHANGELOG, .gitignore.

Follow standard GPL3 + wide exception for Free and Open-source software.
See https://www.nexedi.com/licensing for details.

The project to implement assorted functionality related to LTE.

In particular I intend for it to be the place where KPI-related
functionality will live.