Tracer: support traceable attribute

[ionmincu]

Description

Add support for @traceable to be traced in uipath traces as well.
Some functionalities may be missing.

Examples

@traceable(run_type="llm", name="OpenAI Call Decorator", tags=["my-tag"],  metadata={"my-key": "my-value"} )
def simple_func2(a, b):
    print("Hello from simple func2: ", a, b)
    pass

@traceable
def simple_func(param_a, param_b):
    """A simple function to demonstrate the workflow."""
    print("Hello from simple func")

    return param_a + param_b

@traceable
async def simple_async(a, b, c):
    """A simple async function to demonstrate the workflow."""
    print("Hello from simple async")
    await asyncio.sleep(1)
    return "simple_async_result"

@traceable(run_type="llm", name="OpenAI Call Decorator")
async def simple_async_with_params(a, b, c):
    """A simple async function to demonstrate the workflow."""
    print("Hello from simple async")
    await asyncio.sleep(1)
    return "simple_async_with_params_result"

@traceable(run_type="llm", name="OpenAI Call Decorator")
async def generator_async_with_params(a, b, c):
    yield "Hello from generator async"
    await asyncio.sleep(1)

    yield 123
    yield "abcd"

@traceable(run_type="llm", name="OpenAI Call Decorator")
def generator_with_params(a, b, c):
    yield "Hello from generator"
    yield 123
    yield "abcd"