Use dataclass wrappers for nodes instead of modifying nodes directly in pyreverse

[qequ]

Bug description

when the Linker works over astroid nodes and set attributes for them , e.g. when setting instance_attrs_type

  node.instance_attrs_type = collections.defaultdict(list)

when trying to type hint this attributes like

  node.instance_attrs_type: defaultdict[str, list[...]] = collections.defaultdict(list)

mypy throws an error like this

Type cannot be declared in assignment to non-self attribute [misc]

CC: @DudeNr33

Configuration

No response

Command used

tested with mypy on pre-commit

Pylint output

(no pylint related)

Expected behavior

being able to type hint new attributes for the nodes

Pylint version

(tested with source code)

OS / Environment

ubuntu 20.04

Additional dependencies

No response

[DanielNoord]

As said by @DudeNr33 this should be fixed by using dataclass wrappers around nodes instead of changing the nodes directly. I'm changing the labels and name of the issue.