Add utility pull scripts for omniport backend and frontend

[rish9101]

These scripts pull the omniport-backend and omniport-frontend (including all the present apps and services) locally

[dhruvkb]

@pradumangoyal can back me up on this but I'm pretty sure scripts to do that already exist. @rish9101 check the scripts/ directory.

[dhruvkb]

@rish9101 see everything.sh. It invokes other scripts that themselves invoke other scripts to clone all the relevant repos. So even if you're pull-ing instead of clone-ing, you should have the scripts in the corresponding repos (omniport-backend and omniport-frontend) and just invoke them in omniport-docker.