adding all available get requests to the python client

[L-47]

i think it's a good idea to add all the metrics inside the repo so that you can call metrics just from a variable.
an idea for ease of use

[L-47]

api_items = [ {"assets": "https://api.glassnode.com/v2/metrics/endpoints"}, {"futures": ["https://api.glassnode.com/v1/metrics/derivatives/futures_volume_daily_latest", "https://api.glassnode.com/v1/metrics/derivatives/futures_volume_daily_all_sum", "https://api.glassnode.com/v1/metrics/derivatives/futures_open_interest_latest", "https://api.glassnode.com/v1/metrics/derivatives/futures_open_interest_all_sum", "https://api.glassnode.com/v1/metrics/derivatives/futures_open_interest_perpetual_sum", "https://api.glassnode.com/v1/metrics/derivatives/futures_funding_rate_perpetual" ]}] ###
would this be a good way to structure usable api requests

[philippstangl]

@L-47 Have a look at my forked repository. I made the API client object-oriented, thus no need to lookup endpoints, which to me is more developer-friendly and suits Python's OO nature better.