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/schedule/models/playlist.py

@@ -0,0 +1,39 @@
+from django.db import models
+
+
+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("core.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("storage.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"