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/webstream.py

@@ -0,0 +1,39 @@
+from django.contrib.auth import get_user_model
+from django.db import models
+
+
+class Webstream(models.Model):
+    name = models.CharField(max_length=255)
+    description = models.CharField(max_length=255)
+    url = models.CharField(max_length=512)
+    length = models.DurationField()
+    creator_id = models.IntegerField()
+    mtime = models.DateTimeField()
+    utime = models.DateTimeField()
+    lptime = models.DateTimeField(blank=True, null=True)
+    mime = models.CharField(max_length=1024, blank=True, null=True)
+
+    def get_owner(self):
+        User = get_user_model()
+        return User.objects.get(pk=self.creator_id)
+
+    class Meta:
+        managed = False
+        db_table = "cc_webstream"
+        permissions = [
+            ("change_own_webstream", "Change the webstreams where they are the owner"),
+            ("delete_own_webstream", "Delete the webstreams where they are the owner"),
+        ]
+
+
+class WebstreamMetadata(models.Model):
+    instance = models.ForeignKey("Schedule", models.DO_NOTHING)
+    start_time = models.DateTimeField()
+    liquidsoap_data = models.CharField(max_length=1024)
+
+    def get_owner(self):
+        return self.instance.get_owner()
+
+    class Meta:
+        managed = False
+        db_table = "cc_webstream_metadata"