feat: chain queries

[friendlymatthew]

Query Chaining

Query chaining is more fluent and flexible in its query style.

You can now write queries:

const query = await db
  .where('trip_distance', '>=', 10)
  .orderBy('trip_distance', 'ASC')
  .select([
      'VendorID',
      'trip_distance',
      'passenger_count',
      'fare_amount',
      'tip_amount',
      'mta_tax'
  ])
  .get();

It's forkable, so you can write derived queries:

const query = await db.where("...");
const derivedQuery = query.orderBy("...");

This PR also introduces a JS editor to the demo. The editor can now toggle between JSON and JS. Depending on the editor, you can build a query in JSON form or through the chaining of clauses.

Since the demo's gotten a lot more features, I also separated the .css and the editor-related logic to its own files.

[kevmo314]

Nice!