🎨 Work on import error handling

- Generic ErrorProducer class
- Importer and managers are error producers
- SGDB Auth friendly error
- Bad source location friendly errors (data, config, cache)
- Removed unused decorators

src/errors/error_producer.py

@@ -0,0 +1,28 @@
+from threading import Lock
+
+
+class ErrorProducer:
+    """
+    A mixin for objects that produce errors.
+
+    Specifies the report_error and collect_errors methods in a thread-safe manner.
+    """
+
+    errors: list[Exception] = None
+    errors_lock: Lock = None
+
+    def __init__(self) -> None:
+        self.errors = []
+        self.errors_lock = Lock()
+
+    def report_error(self, error: Exception):
+        """Report an error"""
+        with self.errors_lock:
+            self.errors.append(error)
+
+    def collect_errors(self) -> list[Exception]:
+        """Collect and remove the errors produced by the object"""
+        with self.errors_lock:
+            errors = self.errors.copy()
+            self.errors.clear()
+        return errors