Add C{Full,Unsafe}Loader and UnsafeConstructor (#5988)

stubs/PyYAML/yaml/constructor.pyi

@@ -70,6 +70,12 @@ class FullConstructor(SafeConstructor):
     def construct_python_object_apply(self, suffix, node, newobj=...): ...
     def construct_python_object_new(self, suffix, node): ...
 
+class UnsafeConstructor(FullConstructor):
+    def find_python_module(self, name, mark): ...
+    def find_python_name(self, name, mark): ...
+    def make_python_instance(self, suffix, node, args=..., kwds=..., newobj=...): ...
+    def set_python_instance_state(self, instance, state): ...
+
 class Constructor(SafeConstructor):
     def construct_python_str(self, node): ...
     def construct_python_unicode(self, node): ...

stubs/PyYAML/yaml/cyaml.pyi

@@ -1,7 +1,7 @@
 from _typeshed import SupportsRead
 from typing import IO, Any, Mapping, Sequence, Text, Union
 
-from yaml.constructor import BaseConstructor, Constructor, SafeConstructor
+from yaml.constructor import BaseConstructor, Constructor, FullConstructor, SafeConstructor, UnsafeConstructor
 from yaml.events import Event
 from yaml.nodes import Node
 from yaml.representer import BaseRepresenter, Representer, SafeRepresenter
@@ -33,6 +33,12 @@ class CLoader(CParser, SafeConstructor, Resolver):
 class CSafeLoader(CParser, SafeConstructor, Resolver):
     def __init__(self, stream: str | bytes | _Readable) -> None: ...
 
+class CFullLoader(CParser, FullConstructor, Resolver):
+    def __init__(self, stream: str | bytes | _Readable) -> None: ...
+
+class CUnsafeLoader(CParser, UnsafeConstructor, Resolver):
+    def __init__(self, stream: str | bytes | _Readable) -> None: ...
+
 class CDangerLoader(CParser, Constructor, Resolver): ...  # undocumented
 
 class CEmitter(object):