allow custom storer interface

[BolajiOlajide]

This is the last feature we need to add before going GA.

This allows people to pass their own custom store function (SQL, Airtable e.t.c) that satisfies our IStorer interface.

[lilpolymath]

Also what do you think about exposing the IStorer interface? If we do that, we can update the example to something like this.

import { NowPlaying, Providers, IStorer } from '@BolajiOlajide/now-playing'

let myCustomStorer: IStorer

const np = new NowPlaying(Providers.SPOTIFY, {
  useCache: false, // (optional) default is true
  cacheDuration: 30000, // (optional) in milliseconds
  streamerArgs: {
    clientId: 'foo',
    clientSecret: 'bar',
    refreshToken: 'baz',
  },
  storer: myCustomStorer // (optional) custom storage implementation
})

[BolajiOlajide]

Gotcha! THis is clearer I guess.

[BolajiOlajide]

Done.