add test cases for complex base classes

Author: maxfischer2781

python/extractor/tests/parser/class_bases_new.expected

@@ -0,0 +1 @@
+Module: [1, 0] - [20, 0]

python/extractor/tests/parser/class_bases_new.py

@@ -0,0 +1,19 @@
+class NoBase: pass
+
+class EmptyBase(): pass
+
+class PrimitiveBase(int): pass
+
+class ManyBases(list, object): pass
+
+class SubscriptBase(list[int]): pass
+
+class WalrusBase(foo:=object): pass
+
+class AttrBase(typing.List): pass
+
+class TypedBase[K, V](dict[K, V]): pass
+
+class EllipsisBase(tuple[int, ...]): pass
+
+class NestedBase[K, V](dict[tuple[K, ...], list[V]]): pass