Frontend: Implement queries/mutations for execution environment - Part five

What

Part five of the FE refactor to introduce the ability to create runners with Google cloud.

This issue serves to hook up the queries / mutations for the static implementation of #437907 (closed)

1. Queries that fetch region, zone and machine types
2. Queries that fetch monthly estimate
3. And the mutation that creates the runner with the google cloud data needed

Risks

1. Ensure that existing code works and all new code is hidden properly behind feature flag