feat(llm): add uipath openai llm

[ionmincu]

Description

Add OpenAI integration with UiPath.

Example usage

messages = [
    ChatMessage(
        role="system", content="You are a pirate with colorful personality."
    ),
    ChatMessage(role="user", content="Hello"),
]

llm = UiPathOpenAI() 
response = llm.chat(messages)

embed_model = UiPathOpenAIEmbedding()
result = embed_model.get_text_embedding("the quick brown fox jumps over the lazy dog")

Development Package

• Add this package as a dependency in your pyproject.toml:

[project]
dependencies = [
  # Exact version:
  "uipath-llamaindex==0.0.24.dev1000300078",

  # Any version from PR
  "uipath-llamaindex>=0.0.24.dev1000300000,<0.0.24.dev1000310000"
]

[[tool.uv.index]]
name = "testpypi"
url = "https://test.pypi.org/simple/"
publish-url = "https://test.pypi.org/legacy/"
explicit = true

[tool.uv.sources]
uipath-llamaindex = { index = "testpypi" }