[DOCS] (via Msilb) 'For Indexers & Data Providers' page/callout

[OPMattie]

Via @MSilb7:

Idea: Every single data-related tool in crypto (i.e. Dune, Google, open-source indexers) has not known that there are extra transaction receipt fields for OP (l1Fee, l1GasUsed, l1FeeScalar, l1GasPrice) Should we have this called out in like a “for indexers & data providers” page or something similar? Idk if this would completely solve the problem, but at least it’s something to link to. P.S. new docs are cool

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