Add repr and str for most classes used in parametrize

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/testing/readable.py

@@ -0,0 +1,27 @@
+from abc import ABCMeta
+
+
+class HumanReadableABCMeta(ABCMeta):
+    def __str__(cls):
+        if "__repr_name__" in cls.__dict__:
+            return cls.__dict__["__repr_name__"]
+        return cls.__name__
+
+    def __repr__(cls):
+        if "__repr_name__" in cls.__dict__:
+            return cls.__dict__["__repr_name__"]
+        return cls.__name__
+
+
+class HumanReadableABC(metaclass=HumanReadableABCMeta):
+    @classmethod
+    def __str__(cls):
+        if "__repr_name__" in cls.__dict__:
+            return cls.__dict__["__repr_name__"]
+        return type(cls).__name__
+
+    @classmethod
+    def __repr__(cls):
+        if "__repr_name__" in cls.__dict__:
+            return cls.__dict__["__repr_name__"]
+        return type(cls).__name__