[Feature] Add EIA Daily Spot Prices Data via FRED

[deeleeramone]

1. Why?:

   • To start building within the commodity module.
   • Quick win by curating some FRED series IDs.

2. What?:

   • New endpoint: obb.commodity.spot_prices
   • Adds daily time series data from the EIA spot prices API via FRED, and includes the metadata.
     • The list of commodities is fixed, added "commodity" as a provider parameter to allow variations between providers (future). Choices are:
       • "wti",
       • "brent",
       • "natural_gas",
       • "jet_fuel",
       • "propane",
       • "heating_oil",
       • "diesel_gulf_coast",
       • "diesel_ny_harbor",
       • "diesel_la",
       • "gasoline_ny_harbor",
       • "gasoline_gulf_coast",
       • "rbob",
       • "all"
   • The lbma_fixing endpoint from Nasdaq DataLink appears to be dead, commented out the fetcher and skipped those tests.

3. Impact:

   • openbb-commodity will populate with a function without installing any extras.

4. Testing Done:

   • Integration/unit

[IgorWounds]

This one is good. We need to align what is the best way to deal with the LbmaFixing. I don't like commented code personally.

[deeleeramone]

This one is good. We need to align what is the best way to deal with the LbmaFixing. I don't like commented code personally.

Should we just remove entirely then? I can replace with the direct source eventually, like I did with SP500 multiples and COT reports.

[IgorWounds]

This one is good. We need to align what is the best way to deal with the LbmaFixing. I don't like commented code personally.

Should we just remove entirely then? I can replace with the direct source eventually, like I did with SP500 multiples and COT reports.

Tagging @minhhoang1023 here.

[piiq]

@deeleeramone do you want to pick up the eia integration that's been done here https://github.com/piiq/openbb-energy ?

[deeleeramone]

@deeleeramone do you want to pick up the eia integration that's been done here https://github.com/piiq/openbb-energy ?

ya, but that's out-of-scope for this PR.

[minhhoang1023]

looks good. One thing - do we want to follow the same structure with rest of the endpoints.

So instead of obb.commodity.spot_prices, making it obb.commodity.price.spot

[deeleeramone]

looks good. One thing - do we want to follow the same structure with rest of the endpoints.

So instead of obb.commodity.spot_prices, making it obb.commodity.price.spot

My only objection to that is that it's weird to have multiple levels where nothing else exists. TBH, I'm not sure if there will be more variants of prices here as futures exist elsewhere.