GP notebook import

[IamShubhamGupto]

• import GP notebook from #101
• Possible fix for #120

Known issues

• tensorflow installation on M1 MacBook is broken, unable to test
• gpflow has dependency on tensor flow, possibly need to build on linux/ windows systems

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[IamShubhamGupto]

To address the tensorflow installation on M1 Macs, refer to this comment - https://github.com/GPflow/GPflow/issues/1746#issuecomment-1160726966

Specific instructions for L96_demo repo on Mac devices (apple silicon M devices)

• git clone the repository
• create conda environement and install conda packages
• comment out gpflow from requirements.txt
• install pip packages
• In a separate folder, clone https://github.com/GPflow/GPflow/tree/develop
• In setup.py
  • delete line "tensorflow>=2.4.0; platform_system!='Darwin' or platform_machine!='arm64'",
  • modify line "tensorflow-macos>=2.4.0; platform_system=='Darwin' and platform_machine=='arm64'", to "tensorflow-macos>=2.4.0",
  • savesetup.py
• run pip install -e .
• compile book jupyter book build .