first add files

lib/Crypto/Hash/BLAKE2b.pyi

@@ -0,0 +1,32 @@
+from typing import Any, Union
+from types import ModuleType
+
+Buffer = Union[bytes, bytearray, memoryview]
+
+class BLAKE2b_Hash(object):
+    block_size: int
+    digest_size: int
+    oid: str
+
+    def __init__(self,
+                 data: Buffer,
+		 key: Buffer,
+		 digest_bytes: bytes,
+		 update_after_digest: bool) -> None: ...
+    def update(self, data: Buffer) -> BLAKE2b_Hash: ...
+    def digest(self) -> bytes: ...
+    def hexdigest(self) -> str: ...
+    def verify(self, mac_tag: Buffer) -> None: ...
+    def hexverify(self, hex_mac_tag: str) -> None: ...
+    def new(self,
+            data: Buffer = ...,
+	    digest_bytes: int = ...,
+	    digest_bits: int = ...,
+	    key: Buffer = ...,
+	    update_after_digest: bool = ...) -> BLAKE2b_Hash: ...
+
+def new(data: Buffer = ...,
+	digest_bytes: int = ...,
+	digest_bits: int = ...,
+	key: Buffer = ...,
+	update_after_digest: bool = ...) -> BLAKE2b_Hash: ...