Add UPath dependency/type checking (#1955)

Add universal-pathlib to deps

Make universal-pathlib optional

Author: dstansby

.pre-commit-config.yaml

@@ -35,6 +35,7 @@ repos:
           - numcodecs
           - numpy
           - typing_extensions
+          - universal-pathlib
           # Tests
           - pytest
           # Zarr v2

pyproject.toml

@@ -95,6 +95,7 @@ extra = [
 ]
 optional = [
     'lmdb',
+    'universal-pathlib',
 ]
 
 [project.urls]