Add notification for track added to playlist

[isaacsolo]

Description

Adds a new notification for when a user has their track added to a playlist.

Identity changes: https://github.com/AudiusProject/audius-protocol/commits/master

Completes PLAT-134.

Dragons

Is there anything the reviewer should be on the lookout for? Are there any dangerous changes?

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide repro instructions & any configuration.

Tested against staging and hardcoded a response from identity with a notification

      notifications.notifications.unshift({
        id: '6c3ec116-224c-436b-8bee-95ec840341c3',
        isHidden: false,
        isRead: false,
        isViewed: true,
        timestamp: '2022-06-10T18:19:32.000Z',
        type: 'AddTrackToPlaylist',
        playlistId: 1400,
        playlistOwnerId: 38872,
        trackId: 20998
      })

Simulator.Screen.Recording.-.iPhone.13.-.2022-06-23.at.16.10.29.mp4

Simulator.Screen.Recording.-.iPhone.13.-.2022-06-23.at.13.24.12.mp4

How will this change be monitored?

For features that are critical or could fail silently please describe the monitoring/alerting being added.

[audius-infra]

Preview this change https://demo.audius.co/is-add-track-to-playlist-notif

[audius-infra]

Preview this change https://demo.audius.co/is-add-track-to-playlist-notif

[dylanjeffers]

looks awesome, nice job handling v1 and v2 notifs for native too

[audius-infra]

Preview this change https://demo.audius.co/is-add-track-to-playlist-notif