added feeding data objects and workflow

src/baby_monitor/models/enums.py

@@ -0,0 +1,11 @@
+"""Feeding type enumeration."""
+
+from enum import StrEnum
+
+
+class FeedingType(StrEnum):
+    """Enumeration of feeding types."""
+
+    LEFT_BREAST = "left_breast"
+    RIGHT_BREAST = "right_breast"
+    BOTTLE = "bottle"