[roll pigweed] pw_tokenizer: Add Python BUILD file

Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/105041

https://pigweed.googlesource.com/pigweed/pigweed
pigweed Rolled-Commits: 37203006f656d25..80ed1db4b1dae63
Roller-URL: https://ci.chromium.org/b/8806715283642272401
Cq-Cl-Tag: roller-builder:pigweed-zephyr-roller
Cq-Cl-Tag: roller-bid:8806715283642272401
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: Ia582c84015025fa667b1f3c5d5be09e33d58dc64
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/zephyr-integration/+/105010
Commit-Queue: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
Bot-Commit: Pigweed Integration Roller <pigweed-integration-roller@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/pigweed b/pigweed
index 3720300..80ed1db 160000
--- a/pigweed
+++ b/pigweed
@@ -1 +1 @@
-Subproject commit 37203006f656d255363915683fe919beb36d8b7b
+Subproject commit 80ed1db4b1dae6377a976a21e756a2f77764dd8a