Issue436 - Implement GQL data factory

[idiom-bytes]

Fixes #436

[idiom-bytes]

@trentmc I believe this PR might be good to review such that we can take the following steps next.
#436 (comment)

The latest version from yaml-cli2 has already been merged, and many tests have been written to provide coverage for GQLDataFactory.

Cheers!

[trentmc]

I believe this PR might be good to review such that we can take the following steps next.
#436 (comment)

I have riffed on those steps to create epic #447 "Well-structured lake & analytics". The follow-up can be via that.

[idiom-bytes]

The following pattern was duplicated everywhere and breaking DRY. I fixed this temporarily, as the big fix/removal should be completed once we tackle #446

@enforce_types
def get_sapphire_postfix(network: str) -> str:
    """
    Returns the sapphire postfix based on the network name

    Args:
        network: the network string from ppss or the full network-string
    """

    if "main" in network:
        return "mainnet"
    elif "test" in network:
        return "testnet"
    else:
        raise ValueError(network, "is not a valid network")

[idiom-bytes]

I believe the following code isn't being used any longer inside => predictoor_agent_runner.py::_ppss

@enforce_types
def _ppss(tmpdir) -> PPSS:
    yaml_str = fast_test_yaml_str(tmpdir)
    ppss = PPSS(yaml_str=yaml_str, network="development")

    assert hasattr(ppss, "data_pp")
    ppss.data_pp = DataPP(
        {
            "timeframe": "5m",
            "predict_feeds": ["binanceus c BTC/USDT"],
            "sim_only": {"test_n": 10},
        }
    )
    assert hasattr(ppss, "data_ss")
    ppss.data_ss = DataSS(
        {
            "input_feeds": ["binanceus c BTC/USDT"],
            "parquet_dir": os.path.join("parquet_data"),
            "st_timestr": "2023-06-18",
            "fin_timestr": "2023-07-21",
            "max_n_train": 100,
            "autoregressive_n": 2,
        }
    )

    return ppss