[FEATURE] Run custom code after creating session

[parisni]

Code of Conduct

• I agree to follow this project's Code of Conduct

Search before asking

• I have searched in the issues and found no similar issues.

Describe the feature

Provide a way to startup spark session with custom code. For example add a bunch of create temp view so that the user can access them in its sql session.

Motivation

I need to create temporary views and give access to users

Describe the solution

Provide an pluggeable interface to run arbiratray code with a spark session

Additional context

No response

Are you willing to submit PR?

• Yes. I can submit a PR independently to improve.
• Yes. I would be willing to submit a PR with guidance from the Kyuubi community to improve.
• No. I cannot submit a PR at this time.