Clean up NestedSequence; expose it

Author: NeilGirdhar

src/array_api_typing/__init__.py

@@ -6,6 +6,8 @@
     "DType",
     "Device",
     "HasArrayNamespace",
+    "NestedSequence",
+    "SupportsBufferProtocol",
     "__version__",
     "__version_tuple__",
 ]
@@ -14,4 +16,5 @@
 from ._device import Device
 from ._dtype import DType
 from ._namespace import ArrayNamespace, HasArrayNamespace
+from ._simple import NestedSequence, SupportsBufferProtocol
 from ._version import version as __version__, version_tuple as __version_tuple__

src/array_api_typing/_namespace.py

@@ -16,12 +16,7 @@ class ArrayNamespace(Protocol[A]):
 
     def asarray(
         self,
-        obj: (
-            Array
-            | complex
-            | NestedSequence[bool | int | float | complex]
-            | SupportsBufferProtocol
-        ),
+        obj: Array | complex | NestedSequence[complex] | SupportsBufferProtocol,
         /,
         *,
         dtype: DType | None = None,