add Approximating non function mapping example (#1440)

* add Approximating non function mapping example

* Add comment

* Add comment

* Add comment

* Fixes to pass autogen.py

* Add generated files

python autogen.py add_example keras_recipes/approximating_non_function_mappings

* remove unused

* Simplify noisy spiral.

Fix patience.
Fix limits.
Add tfp link.

* Update generated files.

* Delete checkpoint file.

* Update

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Co-authored-by: Mark Daoust <[email protected]>