Add boilerplate for Railway reference app.

Bug: 225226520
Test: m RailwayReferenceApp
Change-Id: I32ac0db1833164f7af90740ed09f22b360fd3bc6
Merged-In: I32ac0db1833164f7af90740ed09f22b360fd3bc6
(cherry picked from commit I32ac0db1833164f7af90740ed09f22b360fd3bc6)
1 file changed