feat: add csv output parser (#3483)

* Adds the CSV Output Parser

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Gabriel Luiz Freitas Almeida <gabriel@langflow.org>

src/backend/tests/integration/components/output_parsers/test_csv_output_parser.py

@@ -0,0 +1,40 @@
+import os
+import pytest
+
+from langflow.components.models.OpenAIModel import OpenAIModelComponent
+from langflow.components.output_parsers.CSVOutputParser import CSVOutputParserComponent
+from langflow.components.prompts.Prompt import PromptComponent
+from tests.integration.utils import ComponentInputHandle, run_single_component
+
+
+@pytest.mark.asyncio
+@pytest.mark.api_key_required
+async def test_csv_output_parser_openai():
+    format_instructions = ComponentInputHandle(
+        clazz=CSVOutputParserComponent,
+        inputs={},
+        output_name="format_instructions",
+    )
+    output_parser_handle = ComponentInputHandle(
+        clazz=CSVOutputParserComponent,
+        inputs={},
+        output_name="output_parser",
+    )
+    prompt_handler = ComponentInputHandle(
+        clazz=PromptComponent,
+        inputs={
+            "template": "List the first five positive integers.\n\n{format_instructions}",
+            "format_instructions": format_instructions,
+        },
+        output_name="prompt",
+    )
+
+    outputs = await run_single_component(
+        OpenAIModelComponent,
+        inputs={
+            "api_key": os.environ["OPENAI_API_KEY"],
+            "output_parser": output_parser_handle,
+            "input_value": prompt_handler,
+        },
+    )
+    assert outputs["text_output"] == "1, 2, 3, 4, 5"