Add env setup

Bug: b/249997815
Change-Id: I5ced93efa00dabc2732e1161dc492e154b1e380b
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/zephyr-integration/+/112750
Commit-Queue: Rob Mohr <mohrr@google.com>
Reviewed-by: Anthony DiGirolamo <tonymd@google.com>
11 files changed