Wireup GraphQL request to Meetup

[zenlex]

The skeleton for the events index is already built on the feature/events branch.
Next steps (will accept a Techlahoma Hacktoberfest PR for each item)

• install graphql-request as a dependency
• configure graphql client for meetup api (only need to be able to fetch data for techlahoma events and filter to code for tulsa)
  In the getStaticProps() call on the Event index client:
• Fetch the data and format it as needed based on event cards
• merge it with the other event data coming from github (this functionality not implemented yet, see Feat: Event Calendar #53
• replace the hard-coded sample data with the live data

[zenlex]

For the events page, we'd like to query the Meetup API for Techlahoma events and filter down to Code for Tulsa events and possibly other Tulsa org events. We might also want to look at CfA events, tbd.

[helmturner]

We're only issuing GraphQL queries in a limited set of circumstances, so a fully-featured GraphQL client might be overkill. Here are some ideas for a minimalist approach:

• graphql-request
• graphql-hooks
• plain-old fetch