Add basic stub file for native_internal

Author: cdce8p

mypyc/lib-rt/native_internal.pyi

@@ -0,0 +1,14 @@
+class Buffer:
+    def __init__(self, source: bytes | None = None, /) -> None: ...
+    def getvalue(self) -> bytes: ...
+
+def write_bool(data: Buffer, value: bool, /) -> None: ...
+def read_bool(data: Buffer, /) -> bool: ...
+def write_str(data: Buffer, value: str, /) -> None: ...
+def read_str(data: Buffer, /) -> str: ...
+def write_float(data: Buffer, value: float, /) -> None: ...
+def read_float(data: Buffer, /) -> float: ...
+def write_int(data: Buffer, value: int, /) -> None: ...
+def read_int(data: Buffer, /): ...
+def write_tag(data: Buffer, value: int, /) -> None: ...
+def read_tag(data: Buffer, /): ...