feat: import Graph without position information

[ogabrielluiz]

This PR adds the possibility to add a flow generated without the use of the Langflow UI.

To test it run:

from langflow.graph import Graph
from langflow.components import helpers, inputs, models, outputs, prompts

session_id = "test_session_id"
template = """{context}

User: {user_message}
AI: """
memory_component = helpers.MemoryComponent()(session_id=session_id)
chat_input = inputs.ChatInput()
prompt_component = prompts.PromptComponent()(
    template=template, user_message=chat_input.message_response, context=memory_component.retrieve_messages_as_text
)
openai_component = models.OpenAIModelComponent()(
    input_value=prompt_component.build_prompt, max_tokens=100, temperature=0.1
)
chat_output = outputs.ChatOutput()(input_value=openai_component.text_response)

graph = Graph(chat_input, chat_output)
graph_json = graph.dumps()
with open("graph.json", "w") as f:
    f.write(graph_json)

Then paste it in the Langflow workspace.

[github-actions]

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_{Last Modified at 05 Aug 24 20:11 UTC}

[anovazzi1]

LGTM