[roll third_party/pigweed] pw_build: Create pw_hil_test template

This will be used for creating HIL (hardware-in-the-loop) tests.
Ultimately a HIL test is just a binary that needs exclusive access to
the device-under-test. This exclusivity is assured by enforcing serial
execution.

Original-Bug: b/203133921
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/71260

https://pigweed.googlesource.com/pigweed/pigweed
third_party/pigweed Rolled-Commits: 4ddaa9e1547b4fd..44a911c794fdedd
Roller-URL: https://ci.chromium.org/b/8828453387127857233
Cq-Cl-Tag: roller-builder:pigweed-sample-project-roller
Cq-Cl-Tag: roller-bid:8828453387127857233
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ic0403cf4b9c3c61c6bfcae040e49c0ba86f6f46d
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/sample_project/+/72669
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/third_party/pigweed b/third_party/pigweed
index 4ddaa9e..44a911c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 4ddaa9e1547b4fd9f06116fbce4a8cb13ced0167
+Subproject commit 44a911c794fdedd4f3f37b447cda80e4e5343999