Extract lint-robot from linting and move into a separate documentation page

Change-Id: I3045b07cbdef4d7b59c26736c8cfa1383215baaf
diff --git a/howto/code/lint/lint-robot.rst b/howto/code/lint/lint-robot.rst
new file mode 100644
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+++ b/howto/code/lint/lint-robot.rst
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+.. _Makefile Target lint-robot:
+
+LINT: lint-robot
+================
+
+Robot Testing Framework (python)
+================================
+
+Command: rflint `robotframework-lint <https://pypi.org/project/robotframework-lint/>`_
+
+.. code:: bash
+
+    make clean
+    make lint           2>&1 | tee log
+    make lint-robot-all 2>&1 | tee log
+    make lint-robot-mod 2>&1 | tee log
+    make lint-robot-src 2>&1 | tee log
+
+Sources:
+
+- `makefiles/lint <https://gerrit.opencord.org/plugins/gitiles/onf-make/+/refs/heads/master/makefiles/lint/>`__
+- `makefiles/lint/robot/*.mk <https://gerrit.opencord.org/plugins/gitiles/onf-make/+/refs/heads/master/makefiles/lint/robot>`_
+
+.. seealso:
+
+`robotframework.org <https://robotframework.org>`_