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/core/models/preference.py

@@ -0,0 +1,24 @@
+from django.db import models
+
+
+class Preference(models.Model):
+    subjid = models.ForeignKey(
+        "User", models.DO_NOTHING, db_column="subjid", blank=True, null=True
+    )
+    keystr = models.CharField(unique=True, max_length=255, blank=True, null=True)
+    valstr = models.TextField(blank=True, null=True)
+
+    class Meta:
+        managed = False
+        db_table = "cc_pref"
+        unique_together = (("subjid", "keystr"),)
+
+
+class StreamSetting(models.Model):
+    keyname = models.CharField(primary_key=True, max_length=64)
+    value = models.CharField(max_length=255, blank=True, null=True)
+    type = models.CharField(max_length=16)
+
+    class Meta:
+        managed = False
+        db_table = "cc_stream_setting"