add encodings.utf_16 and encodings.utf_32 (#13121)

stdlib/@tests/stubtest_allowlists/common.txt

@@ -66,10 +66,8 @@ encodings.latin_1
 encodings.quopri_codec
 encodings.raw_unicode_escape
 encodings.unicode_escape
-encodings.utf_16
 encodings.utf_16_be
 encodings.utf_16_le
-encodings.utf_32
 encodings.utf_32_be
 encodings.utf_32_le
 encodings.utf_7

stdlib/encodings/utf_16.pyi

@@ -0,0 +1,20 @@
+import codecs
+from _typeshed import ReadableBuffer
+
+encode = codecs.utf_16_encode
+
+def decode(input: ReadableBuffer, errors: str | None = "strict") -> tuple[str, int]: ...
+
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input: str, final: bool = False) -> bytes: ...
+
+class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
+    def _buffer_decode(self, input: ReadableBuffer, errors: str, final: bool) -> tuple[str, int]: ...
+
+class StreamWriter(codecs.StreamWriter):
+    def encode(self, input: str, errors: str = "strict") -> tuple[bytes, int]: ...
+
+class StreamReader(codecs.StreamReader):
+    def decode(self, input: ReadableBuffer, errors: str = "strict") -> tuple[str, int]: ...
+
+def getregentry() -> codecs.CodecInfo: ...

stdlib/encodings/utf_32.pyi

@@ -0,0 +1,20 @@
+import codecs
+from _typeshed import ReadableBuffer
+
+encode = codecs.utf_32_encode
+
+def decode(input: ReadableBuffer, errors: str | None = "strict") -> tuple[str, int]: ...
+
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input: str, final: bool = False) -> bytes: ...
+
+class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
+    def _buffer_decode(self, input: ReadableBuffer, errors: str, final: bool) -> tuple[str, int]: ...
+
+class StreamWriter(codecs.StreamWriter):
+    def encode(self, input: str, errors: str = "strict") -> tuple[bytes, int]: ...
+
+class StreamReader(codecs.StreamReader):
+    def decode(self, input: ReadableBuffer, errors: str = "strict") -> tuple[str, int]: ...
+
+def getregentry() -> codecs.CodecInfo: ...