Makefile and python cleanups.
Makefile
--------
o Add std copyright notice header
o Update to use repo:onf-make to support virtualenv, etc makefile targets.
o Update help to display a static text block. Grep for strings prefixed
by '##' can become confused and display 'Makefile' instead of target name.
tox.ini
-------
o Update to also support python 3.10+
Change-Id: Id8183ad03df252c81631a8c5ef4f08fe23d0ada5
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..b524402
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "makefiles/onf-lib"]
+ path = makefiles/onf-lib
+ url = https://github.com/opencord/onf-make.git