chore: use src layout

src/django_components/app_settings.py

@@ -0,0 +1,40 @@
+from enum import Enum
+
+from django.conf import settings
+
+
+class ContextBehavior(Enum):
+    GLOBAL = "global"
+    ISOLATED = "isolated"
+
+
+class AppSettings:
+    def __init__(self):
+        self.settings = getattr(settings, "COMPONENTS", {})
+
+    @property
+    def AUTODISCOVER(self):
+        return self.settings.setdefault("autodiscover", True)
+
+    @property
+    def LIBRARIES(self):
+        return self.settings.setdefault("libraries", [])
+
+    @property
+    def TEMPLATE_CACHE_SIZE(self):
+        return self.settings.setdefault("template_cache_size", 128)
+
+    @property
+    def CONTEXT_BEHAVIOR(self):
+        raw_value = self.settings.setdefault("context_behavior", ContextBehavior.GLOBAL.value)
+        return self._validate_context_behavior(raw_value)
+
+    def _validate_context_behavior(self, raw_value):
+        try:
+            return ContextBehavior(raw_value)
+        except ValueError:
+            valid_values = [behavior.value for behavior in ContextBehavior]
+            raise ValueError(f"Invalid context behavior: {raw_value}. Valid options are {valid_values}")
+
+
+app_settings = AppSettings()