core: add Ethereum-compatible aliases for BLS12-381

Close #4041.

Signed-off-by: Tural Devrishev <tural@nspcc.ru>

Author: Tural Devrishev

pkg/config/hardfork.go

@@ -54,7 +54,8 @@ const (
 	// https://github.com/neo-project/neo/pull/4147,
 	// https://github.com/neo-project/neo/pull/4150), #4057 (ported from
 	// https://github.com/neo-project/neo/pull/4278), #4052 (ported from
-	// https://github.com/neo-project/neo/pull/4201).
+	// https://github.com/neo-project/neo/pull/4201), #4050 (ported from
+	// https://github.com/neo-project/neo/pull/4186).
 	HFFaun // Faun
 	// hfLast denotes the end of hardforks enum. Consider adding new hardforks
 	// before hfLast.