chore: initial stubs structure

src/netius/auth/base.pyi

@@ -0,0 +1,8 @@
+from typing import Literal
+
+class Auth(object):    
+    @classmethod
+    def verify(cls, encoded: str, decoded: str) -> bool: ...
+
+    @classmethod
+    def generate(cls, password: str, type: Literal["md5", "sha1", "sha256", "sha512"] = "sha256", salt: str = "netius") -> str: ...