feat: add bidding zone to energy charts price prediction (#765)

Energy charts supports bidding zones. Allow to specifiy the bidding zone in the configuration.

Extend and simplify ElecPrice configuration structure and setup config migration to automatically
update the configuration file.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

src/akkudoktoreos/prediction/elecprice.py

@@ -4,6 +4,9 @@ from pydantic import Field, field_validator
 
 from akkudoktoreos.config.configabc import SettingsBaseModel
 from akkudoktoreos.prediction.elecpriceabc import ElecPriceProvider
+from akkudoktoreos.prediction.elecpriceenergycharts import (
+    ElecPriceEnergyChartsCommonSettings,
+)
 from akkudoktoreos.prediction.elecpriceimport import ElecPriceImportCommonSettings
 from akkudoktoreos.prediction.prediction import get_prediction
 
@@ -17,15 +20,6 @@ elecprice_providers = [
 ]
 
 
-class ElecPriceCommonProviderSettings(SettingsBaseModel):
-    """Electricity Price Prediction Provider Configuration."""
-
-    ElecPriceImport: Optional[ElecPriceImportCommonSettings] = Field(
-        default=None,
-        json_schema_extra={"description": "ElecPriceImport settings", "examples": [None]},
-    )
-
-
 class ElecPriceCommonSettings(SettingsBaseModel):
     """Electricity Price Prediction Configuration."""
 
@@ -53,17 +47,14 @@ class ElecPriceCommonSettings(SettingsBaseModel):
         },
     )
 
-    provider_settings: ElecPriceCommonProviderSettings = Field(
-        default_factory=ElecPriceCommonProviderSettings,
-        json_schema_extra={
-            "description": "Provider settings",
-            "examples": [
-                # Example 1: Empty/default settings (all providers None)
-                {
-                    "ElecPriceImport": None,
-                },
-            ],
-        },
+    elecpriceimport: ElecPriceImportCommonSettings = Field(
+        default_factory=ElecPriceImportCommonSettings,
+        json_schema_extra={"description": "Import provider settings."},
+    )
+
+    energycharts: ElecPriceEnergyChartsCommonSettings = Field(
+        default_factory=ElecPriceEnergyChartsCommonSettings,
+        json_schema_extra={"description": "Energy Charts provider settings."},
     )
 
     # Validators