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
1 file changed