[BigQuery Destination] Ability to choose the project for execution

[goktugkose]

Hi everyone 👋

In our architecture, we separate data and execution projects. In other words, some projects do not have resource to run queries. We run our queries to update tables on data projects using execution projects since they have slots. It will be a great feature to separately choose which project we want to store our data and which we want to execute load jobs and queries.

Thanks in advance 🙏