build: add Zuul check pipeline

This pipeline checks the extension with |web-ext lint|.

Change-Id: I3bce686ff33fcbd24c0857da17eccd12458ed2ec
diff --git a/.zuul.yaml b/.zuul.yaml
new file mode 100644
index 0000000..020fd4f
--- /dev/null
+++ b/.zuul.yaml
@@ -0,0 +1,20 @@
+# == Zuul configuration file ==
+#
+# This file is used to configure this project and its associated jobs in Zuul.
+# Zuul is the CI/CD tool which lets us check changes before they are committed,
+# and build a canary version of the extension on a regular basis.
+#
+# More info about Zuul: https://zuul-ci.org/docs/zuul/
+
+- job:
+    name: screen-capture-lint
+    parent: web-ext-lint
+    pre-run: playbooks/lint/pre.yaml
+    run: playbooks/lint/run.yaml
+    irrelevant-files:
+      - "README.md"
+
+- project:
+    check:
+      jobs:
+        - screen-capture-lint