feat: import code from CWS listing

This is an import from the code as uploaded to the Chrome Web Store in
version 0.1.4.

It also adds a .gitreview file to facilitate uploading the code for
review in Gerrit.

Change-Id: Ib15fdf3b9508b2cc9e49ac0414fcaea3e6441bbb
diff --git a/.gitreview b/.gitreview
new file mode 100644
index 0000000..43cb5f2
--- /dev/null
+++ b/.gitreview
@@ -0,0 +1,5 @@
+[gerrit]
+host=gerrit.avm99963.com
+port=29418
+project=report-webpages-webext
+defaultbranch=main