Add dependency management (Renovate) for all packages in monorepo

[jaredhirsch]

This bug tracks enabling Renovate for automated dependency management in the monorepo packages:

• 123done
• browserid-verifier
• fxa-auth-db-mysql
• fxa-auth-server
• fxa-basket-proxy
• fxa-content-server
• fxa-customs-server
• fxa-email-event-proxy
• fxa-email-service
• fxa-event-broker
• fxa-geodb
• fxa-js-client
• fxa-payments-server (chore(payments): configure Renovate #1908)
• fxa-profile-server
• fxa-shared
• fxa-support-panel (Renovate updates #2016)