implement config layering

owrx/config/dynamic.py

@@ -0,0 +1,25 @@
+from owrx.config.core import CoreConfig
+from owrx.config.migration import Migrator
+from owrx.property import PropertyLayer
+import json
+
+
+class DynamicConfig(PropertyLayer):
+    def __init__(self):
+        super().__init__()
+        try:
+            with open(DynamicConfig._getSettingsFile(), "r") as f:
+                for k, v in json.load(f).items():
+                    self[k] = v
+        except FileNotFoundError:
+            pass
+        Migrator.migrate(self)
+
+    @staticmethod
+    def _getSettingsFile():
+        coreConfig = CoreConfig()
+        return "{data_directory}/settings.json".format(data_directory=coreConfig.get_data_directory())
+
+    def store(self):
+        with open(DynamicConfig._getSettingsFile(), "w") as file:
+            json.dump(self.__dict__(), file, indent=4)