feat(api): split api into multiple apps (#1626)

Fixes #1622

- split the api into 4 apps: core, history, schedule, storage
- exploded the settings into testing/prod

api/libretime_api/models/playlists.py

@@ -1,42 +0,0 @@
-from django.db import models
-
-from .files import File
-from .smart_blocks import SmartBlock
-
-
-class Playlist(models.Model):
-    name = models.CharField(max_length=255)
-    mtime = models.DateTimeField(blank=True, null=True)
-    utime = models.DateTimeField(blank=True, null=True)
-    creator = models.ForeignKey("User", models.DO_NOTHING, blank=True, null=True)
-    description = models.CharField(max_length=512, blank=True, null=True)
-    length = models.DurationField(blank=True, null=True)
-
-    def get_owner(self):
-        return self.creator
-
-    class Meta:
-        managed = False
-        db_table = "cc_playlist"
-
-
-class PlaylistContent(models.Model):
-    playlist = models.ForeignKey(Playlist, models.DO_NOTHING, blank=True, null=True)
-    file = models.ForeignKey(File, models.DO_NOTHING, blank=True, null=True)
-    block = models.ForeignKey(SmartBlock, models.DO_NOTHING, blank=True, null=True)
-    stream_id = models.IntegerField(blank=True, null=True)
-    type = models.SmallIntegerField()
-    position = models.IntegerField(blank=True, null=True)
-    trackoffset = models.FloatField()
-    cliplength = models.DurationField(blank=True, null=True)
-    cuein = models.DurationField(blank=True, null=True)
-    cueout = models.DurationField(blank=True, null=True)
-    fadein = models.TimeField(blank=True, null=True)
-    fadeout = models.TimeField(blank=True, null=True)
-
-    def get_owner(self):
-        return self.playlist.owner
-
-    class Meta:
-        managed = False
-        db_table = "cc_playlistcontents"