fix: logging, prediction update, multiple bugs (#584)

* Fix logging configuration issues that made logging stop operation. Switch to Loguru
  logging (from Python logging). Enable console and file logging with different log levels.
  Add logging documentation.

* Fix logging configuration and EOS configuration out of sync. Added tracking support
  for nested value updates of Pydantic models. This used to update the logging configuration
  when the EOS configurationm for logging is changed. Should keep logging config and EOS
  config in sync as long as all changes to the EOS logging configuration are done by
  set_nested_value(), which is the case for the REST API.

* Fix energy management task looping endlessly after the second update when trying to update
  the last_update datetime.

* Fix get_nested_value() to correctly take values from the dicts in a Pydantic model instance.

* Fix usage of model classes instead of model instances in nested value access when evaluation
  the value type that is associated to each key.

* Fix illegal json format in prediction documentation for PVForecastAkkudoktor provider.

* Fix documentation qirks and add EOS Connect to integrations.

* Support deprecated fields in configuration in documentation generation and EOSdash.

* Enhance EOSdash demo to show BrightSky humidity data (that is often missing)

* Update documentation reference to German EOS installation videos.

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

src/akkudoktoreos/config/config.py

@@ -14,6 +14,7 @@ import shutil
 from pathlib import Path
 from typing import Any, ClassVar, Optional, Type
 
+from loguru import logger
 from platformdirs import user_config_dir, user_data_dir
 from pydantic import Field, computed_field
 from pydantic_settings import (
@@ -29,7 +30,6 @@ from akkudoktoreos.core.cachesettings import CacheCommonSettings
 from akkudoktoreos.core.coreabc import SingletonMixin
 from akkudoktoreos.core.decorators import classproperty
 from akkudoktoreos.core.emsettings import EnergyManagementCommonSettings
-from akkudoktoreos.core.logging import get_logger
 from akkudoktoreos.core.logsettings import LoggingCommonSettings
 from akkudoktoreos.core.pydantic import PydanticModelNestedValueMixin, merge_models
 from akkudoktoreos.devices.settings import DevicesCommonSettings
@@ -44,8 +44,6 @@ from akkudoktoreos.server.server import ServerCommonSettings
 from akkudoktoreos.utils.datetimeutil import to_timezone
 from akkudoktoreos.utils.utils import UtilsCommonSettings
 
-logger = get_logger(__name__)
-
 
 def get_absolute_path(
     basepath: Optional[Path | str], subpath: Optional[Path | str]
@@ -80,10 +78,6 @@ class GeneralSettings(SettingsBaseModel):
     Properties:
         timezone (Optional[str]): Computed time zone string based on the specified latitude
             and longitude.
-
-    Validators:
-        validate_latitude (float): Ensures `latitude` is within the range -90 to 90.
-        validate_longitude (float): Ensures `longitude` is within the range -180 to 180.
     """
 
     _config_folder_path: ClassVar[Optional[Path]] = None
@@ -283,6 +277,16 @@ class ConfigEOS(SingletonMixin, SettingsEOSDefaults):
     ENCODING: ClassVar[str] = "UTF-8"
     CONFIG_FILE_NAME: ClassVar[str] = "EOS.config.json"
 
+    def __hash__(self) -> int:
+        # ConfigEOS is a singleton
+        return hash("config_eos")
+
+    def __eq__(self, other: Any) -> bool:
+        if not isinstance(other, ConfigEOS):
+            return False
+        # ConfigEOS is a singleton
+        return True
+
     @classmethod
     def settings_customise_sources(
         cls,