Added prompt class

[tinomaxthayil]

• Added class RagasPrompt for creating prompt objects
  - RagasPrompt.format - Will take the input parameters and returns the ChatPromptTemplate
  - RagasPrompt.validate - Will check if the prompt object has the field in correct formay

• Added RagasPrompt to init

• Added test_prompt to test prompt object

[jjmachan]

Overall looks really good but just 2 things

1. write some tests - you can write some simple tests and reflect the usecases that prompts will be used for (based on different types of prompts we have) and that would be very valuable
2. no need for a module named /prompt just a file is enough - we are not going to subclass this right. Prompt will only be a container for the data

[shahules786]

Add missing dependency langchain-core

[shahules786]

It would be good to have a function that returns examples as str. For example:

statement_prompt = RagasPrompt(
    instruction = "Create one or more statements from each sentence in the given answer.",
    examples = [
    {"question": "Who was  Albert Einstein and what is he best known for?",
    "answer": "He was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. He was best known for developing the theory of relativity, he also made important contributions to the development of the theory of quantum mechanics.",
    "statements in json":
    """{
        "statements": [
            "Albert Einstein was born in Germany.",
            "Albert Einstein was best known for his theory of relativity."
        ]
    }"""}],
    input_keys=["question","answer"],
    output_key="statements in json",
    output_type="JSON")

statement_prompt.get_example_str(0)

Output

question: Who was  Albert Einstein and what is he best known for?
answer: He was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. He was best known for developing the theory of relativity, he also made important contributions to the development of the theory of quantum mechanics.
statements in json: {{
        "statements": [
            "Albert Einstein was born in Germany.",
            "Albert Einstein was best known for his theory of relativity."
        ]
    }}

[jjmachan]

just some minor changes, feel free to merge it after fixing it
Note: do make the CI passes before - that is important

[shahules786]

LGTM