Add redis.asyncio.parser (#8830)

Source: https://github.com/redis/redis-py/blob/master/redis/asyncio/parser.py

stubs/redis/redis/asyncio/parser.pyi

@@ -0,0 +1,8 @@
+from typing import Any
+
+# TODO: define and use:
+# from redis.asyncio.cluster import ClusterNode
+
+class CommandsParser:
+    async def initialize(self, node: Any | None = ...) -> None: ...  # TODO: ClusterNode
+    async def get_keys(self, *args: Any) -> tuple[str, ...] | None: ...