Feature: Added a demo for learnlm model

[andycandy]

Closes #732

• Added Get_Started_Learnlm notebook in quickstarts folder
• nbfmt and lint checked

[review-notebook-app[bot]]

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[andycandy]

@Giom-V @markmcd

[nikitamaia]

@andycandy this is great! I added a few minor comments to clarify some of the markdown instructions.

[andycandy]

@nikitamaia thank you for the feedback, I'll work on those suggestions now

[Giom-V]

@andycandy You also need to update the quickstarts readme to add a link to the notebook (maybe not the main one as it's not a new model)

[andycandy]

On it @Giom-V!

[andycandy]

Done!