Add warning for cloudpathlib in python 3.12 (#58)

Add warning with note to use Python 3.11 or earlier for remote storage
support given the current release of `cloudpathlib`.

weasel/errors.py

@@ -10,6 +10,10 @@ def __getattribute__(self, code):
 class Warnings(metaclass=ErrorsWithCodes):
     # File system
     W801 = "Could not clean/remove the temp directory at {dir}: {msg}."
+    W802 = (
+        "Remote storage is not yet supported for Python 3.12 with "
+        "cloudpathlib. Please use Python 3.11 or earlier for remote storage."
+    )
 
 
 class Errors(metaclass=ErrorsWithCodes):

weasel/util/filesystem.py

@@ -72,9 +72,17 @@ def ensure_path(path: Any) -> Any:
 
 
 def ensure_pathy(path):
-    """Temporary helper to prevent importing Pathy globally (which can cause
-    slow and annoying Google Cloud warning)."""
-    from cloudpathlib import AnyPath  # noqa: F811
+    """Temporary helper to prevent importing cloudpathlib globally (which was
+    originally added due to a slow and annoying Google Cloud warning with
+    Pathy)"""
+    try:
+        from cloudpathlib import AnyPath  # noqa: F811
+    except ImportError as e:
+        import sys
+
+        if sys.version >= (3, 12):
+            warnings.warn(Warnings.W802)
+        raise e
 
     return AnyPath(path)