Add Bazel build for Webhooks plugin

Change-Id: Iff125a2aae41f6f456dd18eb9d9d1449fbdf6bf9
diff --git a/jenkins/gerrit-bazel-plugin-webhooks.yaml b/jenkins/gerrit-bazel-plugin-webhooks.yaml
new file mode 100644
index 0000000..b010535
--- /dev/null
+++ b/jenkins/gerrit-bazel-plugin-webhooks.yaml
@@ -0,0 +1,13 @@
+- project:
+    name: webhooks
+    jobs:
+      - 'plugin-{name}-bazel-{branch}':
+          branch:
+            - stable-2.13
+      - 'plugin-{name}-bazel-{branch}-{gerrit-branch}':
+          branch:
+            - master
+          gerrit-branch:
+            - master
+            - stable-2.14
+