Refactor to make adding new metrics easier.

[rosekamallove]

We can probably create a file say metrics.js and then add an object to it containing all the metric-dependent code.

It may look like:

const metrics = {
  metricNames: [...orderedMetricNames],
  permissions: { ...metricPermissions },
  extractionMethods: { ...extractionMethods },
  schemaForValidation: { ...typesOfMetrics },
};

[rosekamallove]

@ljharb should we also add the GraphQL Query in the same file too?

[ljharb]

Let’s start with just the metrics - maybe the graphql query can be constructed dynamically from the one list of metrics?

[rosekamallove]

The names are different in the metricNames array we would have to add a lot of checks. Maybe I can think of a solution. For now I'll just refactor the metricsNames extractMethods & permissions

[ljharb]

Done in #60.