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/history/models/live.py

@@ -0,0 +1,11 @@
+from django.db import models
+
+
+class LiveLog(models.Model):
+    state = models.CharField(max_length=32)
+    start_time = models.DateTimeField()
+    end_time = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        managed = False
+        db_table = "cc_live_log"