Add config and change bear to baer

config.py

@@ -0,0 +1,20 @@
+from flask.cli import load_dotenv
+
+
+class Config:
+    """
+    Configuration manager for the Julius Baer API client.
+
+    Reads configuration from a YAML file and overrides values
+    with environment variables when available.
+    """
+
+    def __init__(self, config_file_path: str = "config.yaml"):
+        """
+        Initialize the configuration manager.
+
+        Args:
+            config_file_path: Path to the YAML configuration file. Defaults to "config.yaml".
+        """
+        # Load environment variables from .env file if it exists
+        load_dotenv()