Format class definitions (#5289)

crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/class_definition.py

@@ -0,0 +1,36 @@
+class Test(
+    Aaaaaaaaaaaaaaaaa,
+    Bbbbbbbbbbbbbbbb,
+    DDDDDDDDDDDDDDDD,
+    EEEEEEEEEEEEEE,
+    metaclass=meta,
+):
+    pass
+
+
+class Test((Aaaaaaaaaaaaaaaaa), Bbbbbbbbbbbbbbbb, metaclass=meta):
+    pass
+
+class Test( # trailing class comment
+    Aaaaaaaaaaaaaaaaa, # trailing comment
+
+    # in between comment
+
+    Bbbbbbbbbbbbbbbb,
+    # another leading comment
+    DDDDDDDDDDDDDDDD,
+    EEEEEEEEEEEEEE,
+    # meta comment
+    metaclass=meta, # trailing meta comment
+):
+    pass
+
+class Test((Aaaa)):
+    ...
+
+
+class Test(aaaaaaaaaaaaaaa + bbbbbbbbbbbbbbbbbbbbbb + cccccccccccccccccccccccc + dddddddddddddddddddddd + eeeeeeeee, ffffffffffffffffff, gggggggggggggggggg):
+    pass
+
+class Test(Aaaa): # trailing comment
+    pass