tf-github-autoresponse: Add TF-Shared PR tempalte msg

Add PR template message for Github
TF-Shared/transfer-list-library repository

A webhook is setup in this project to trigger
the autoreply bot.

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: I0cbdbb7ce52bcec2dbcd51270a605cc78bf6e6cb
diff --git a/ci/TF-Shared_pr_comment.md b/ci/TF-Shared_pr_comment.md
new file mode 100644
index 0000000..0db7ca2
--- /dev/null
+++ b/ci/TF-Shared_pr_comment.md
@@ -0,0 +1,9 @@
+Hello @{user_name}!
+
+Thank you for your contribution to **transfer-list-library**!
+
+The github hosting is a read-only mirror and pull requests aren't monitored.
+
+Contributions shall be posted to the [Gerrit dashboard](https://review.trustedfirmware.org/admin/repos/shared/transfer-list-library,general), Sorry for the inconveniences!
+
+You can find more information about the project on the projects homepage.