pw_build: Allow passing args in pw_hil_test
pw_build: Allow passing args in pw_hil_test

This will allow running Python scripts that require command-line
arguments.

Bug: b/232312239
Change-Id: Idd141c4e65fd1212e24e9c7c52dd9fad563a7ad6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/94581
Commit-Queue: Ted Pudlik <c7372cc3e451acc046049fca9e050bcb2a4a3d11@google.com>
Reviewed-by: Armando Montanez <97ef6fdb231c129ac8827d9f0c4106bfbf57f74f@google.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed