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/settings/prod.py

@@ -0,0 +1,55 @@
+from os import getenv
+
+# pylint: disable=unused-import
+from ._internal import (
+    API_VERSION,
+    AUTH_PASSWORD_VALIDATORS,
+    AUTH_USER_MODEL,
+    DEBUG,
+    DEFAULT_AUTO_FIELD,
+    INSTALLED_APPS,
+    MIDDLEWARE,
+    REST_FRAMEWORK,
+    ROOT_URLCONF,
+    SPECTACULAR_SETTINGS,
+    STATIC_URL,
+    TEMPLATES,
+    WSGI_APPLICATION,
+    setup_logger,
+)
+from ._schema import Config
+
+LIBRETIME_LOG_FILEPATH = getenv("LIBRETIME_LOG_FILEPATH")
+LIBRETIME_CONFIG_FILEPATH = getenv("LIBRETIME_CONFIG_FILEPATH")
+
+CONFIG = Config(filepath=LIBRETIME_CONFIG_FILEPATH)
+
+SECRET_KEY = CONFIG.general.api_key
+
+ALLOWED_HOSTS = ["*"]
+
+LOGGING = setup_logger(LIBRETIME_LOG_FILEPATH)
+
+# Database
+# https://docs.djangoproject.com/en/3.2/ref/settings/#databases
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.postgresql",
+        "HOST": CONFIG.database.host,
+        "PORT": CONFIG.database.port,
+        "NAME": CONFIG.database.name,
+        "USER": CONFIG.database.user,
+        "PASSWORD": CONFIG.database.password,
+    }
+}
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/3.2/topics/i18n/
+
+LANGUAGE_CODE = "en-us"
+TIME_ZONE = "UTC"
+USE_I18N = True
+USE_L10N = True
+USE_TZ = True