feat(exception): add PoetryRuntimeError.append()

Author: abn

src/poetry/console/exceptions.py

@@ -222,3 +222,9 @@ def create(
             )
 
         return cls(reason, messages)
+
+    def append(self, message: str | ConsoleMessage) -> PoetryRuntimeError:
+        if isinstance(message, str):
+            message = ConsoleMessage(message)
+        self._messages.append(message)
+        return self

tests/console/test_exections_poetry_runtime_error.py

@@ -139,3 +139,10 @@ def test_poetry_runtime_error_create(
 
     actual_texts = [msg.text for msg in error._messages]
     assert actual_texts == expected_message_texts
+
+
+def test_poetry_runtime_error_append() -> None:
+    """Test the append method of PoetryRuntimeError."""
+    error = PoetryRuntimeError.create("Error", info=["Hello"]).append("World")
+    actual_texts = [msg.text for msg in error._messages]
+    assert actual_texts == ["Error", "<info>Hello</>", "World"]