Ability to interpolate env vars in *.options.env in project.json

[dustyhorizon]

Currently we are heavily using Nx in our workflows and ran into a problem of not being able to easily interpolate Nx environment variables within *.options.env in project.json when using the nx:run-commands executor.

The idea is to be able to do have a unique "DISPLAY_NAME" variable per job in the monorepo that is built from specific Nx environment variables i.e. DISPLAY_NAME=${NX_TASK_TARGET_PROJECT}:${NX_TASK_TARGET_TARGET}"

A workaround is to configure the environment variables inline with the command(s) but that will make it super long and unnecessary difficult to maintain as it is prone to developer error.