Add exercises or challenges to quickstart guides

[mirnawong1]

Contributions

• I have read the contribution docs, and understand what's expected of me.

Link to the page on docs.getdbt.com requiring updates

Similar to react, i think it'd be helpful to provide users with challenges once they complete the quickstart. it may help further ease users to dbt and prepare them.

This would require collaboration with DX or training in order to create and publish challenges

What part(s) of the page would you like to see updated?

https://docs.getdbt.com/quickstarts

Additional information

https://react.dev/learn/passing-props-to-a-component#challenges

[mirnawong1]

closing this as it's a nice to have but not needed, esp since the fundamentals course has this too.