Added 2 scripts

This is a script that will make our lives easier with maintaining the project. There are more to come, but for now we can deploy to multiply places using this script:

\# Deploy locally (localhost:8080)
hl deploy dev

\# Deploy to staging (care-tiger-staging.appspot.com)
hl deploy staging

\# Deploy to prod (care-tiger.appspot.com)
hl deploy prod

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Added all in one dev_setup script:
Makes setting up the environment easier.