[webpack] added config that allows landing & web to be accessed on physical devices on same network
Summary:
able to load web & landing on physical device on same network while developing
Test Plan: run landing & web, load them on a physical device
Reviewers: atul, ashoat, varun, abosh
Reviewed By: ashoat
Subscribers: tomek, abosh, varun, ashoat, atul
Differential Revision: https://phab.comm.dev/D5132