test: Add pigweed.json to run all the tests

BUG=b/346596832

Change-Id: Ib2e8a22a0294c5827c36a55fed19563fef4c447a
Reviewed-on: https://pigweed-review.googlesource.com/c/zephyr/zephyr-bazel/+/224211
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Reviewed-by: Sergio Soares <sergiosoares@google.com>
Pigweed-Auto-Submit: Yuval Peress <peress@google.com>
diff --git a/examples/hello_dts/pigweed.json b/examples/hello_dts/pigweed.json
new file mode 100644
index 0000000..c9b850b
--- /dev/null
+++ b/examples/hello_dts/pigweed.json
@@ -0,0 +1,20 @@
+{
+    "pw": {
+      "bazel_presubmit": {
+        "remote_cache": true,
+        "upload_local_results": true,
+        "programs": {
+          "default": [
+            [
+              "build",
+              ":app"
+            ],
+            [
+              "test",
+              ":all"
+            ]
+          ]
+        }
+      }
+    }
+  }
\ No newline at end of file