`pyreverse` should ignore class level attribute declarations

[DudeNr33]

Bug description

If an attribute is only declared on class level (with type annotation), but not assigned to a value, it is currently displayed twice in pyreverse diagrams:

class ExampleClass():
    example1: int
    example2: int

    def __init__(self):
        self.example1 = 1
        self.example2 = 2

@startuml classes
set namespaceSeparator none
class "ExampleClass" as asdf.ExampleClass {
  example1 : int
  example1 : int
  example2 : int
  example2 : int
}
@enduml

However it should be ignored, and only the type information should be picked up by pyreverse.

Note: if a value is assigned on class level, the attribute is a class attribute and the attributes defined in __init__ are instance attributes.
Both exist independently from one another, and the class attribute should be shown as "static attribute" with an underline.
See also the discussion in this issue.

Configuration

No response

Command used

pyreverse a.py

Pylint output

See above

Expected behavior

Only show the attribute once.

Pylint version

pylint 2.16.0-dev
astroid 2.12.13
Python 3.10.8 (main, Nov  1 2022, 14:18:21) [GCC 12.2.0]

OS / Environment

No response

Additional dependencies

No response