test: Add blocks_path property to TestNode

Author: MarcoFalke

Diff for: test/functional/test_framework/test_node.py

@@ -420,6 +420,10 @@ def chain_path(self) -> Path:
     def debug_log_path(self) -> Path:
         return self.chain_path / 'debug.log'
 
+    @property
+    def blocks_path(self) -> Path:
+        return self.chain_path / "blocks"
+
     @property
     def wallets_path(self) -> Path:
         return self.chain_path / "wallets"