Add Databricks as Spark Launcher for feast

[SHARANTANGEDA]

No description provided.

[ghost]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

❌ SHARANTANGEDA sign now
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[jainr]

Thanks for your contributions, they look good to me.
@xiaoyongzhumsft - Kindly review it too.

[jainr]

@SHARANTANGEDA - Would you mind adding the notebook/code you used to verify the Databricks functionality?

[gunjansharma]

@SHARANTANGEDA Any plans to push these changes in?