slightly changed block format

- small change in block format
- added config in blockchain explorer
- bugfixes

crypto/vm/utils.h

@@ -0,0 +1,11 @@
+#pragma once
+#include "stack.hpp"
+
+#include <vector>
+
+namespace vm {
+
+td::Result<std::vector<vm::StackEntry>> parse_stack_entries(td::Slice str, bool prefix_only = false);
+td::Result<vm::StackEntry> parse_stack_entry(td::Slice str, bool prefix_only = false);
+
+}  // namespace vm