feat(FunnelChart): Add nr1-funnel-component to community library

[tangollama]

https://github.com/newrelic/nr1-funnel-component

[devfreddy]

Initially added here - 19b7df8

Needs redesigned and defined a bit.

[devfreddy]

Current Form:

<Funnel
  accountId
  launcherUrlState
  height={575}
  width={200}
  funnel={ { event, measure }}
  steps={[{ label: '', nrqlWhere: '' }]}
  series={[ { label: '', nrqlWhere: '' }]}
  ></Funnel>

Proposed Changes:

• Add query to match nr1 FunnelChart signature - thinking the options here would be if you provide query we ignore steps and series??? Need to understand what the nr1 does relative to this one.
• Remove launcherUrlState and replace with a more generic timeRange attribute that must be an object with a shape of begin_time, duration, end_time
• Keep height/width
• Change funnel.event to funnel.eventType
• Change funnel.measure to funnel.attribute - Can we go more generic with attribute or is a measure an aggregate function applied to an attribute over time?

<Funnel
  accountId={accountId}
  query={nrql}
  timeRange={{ begin_time, duration, end_time }}
  height={575}
  width={200}
  funnel={ { eventType, attribute }}
  steps={[{ label: '', nrqlWhere: '' }]}
  series={[ { label: '', nrqlWhere: '' }]}
>
</Funnel>