OMS Adapter: update documentation

[prBigBrother]

Changed flag for support: TCF-EU, USP/CCPA, COPPA, GPP

🏷 Type of documentation

• update bid adapter description

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[bretg]

Sorry, but the gpp_supported field is has been deprecated in favor of gpp_sids.

If you support the IAB’s GPP consent string, add gpp_sids with a comma separated list of section names, e.g. gpp_sids: tcfeu, tcfca, usnat, usstate_all, usp. Default is None.

Also note that you're missing several metadata fields requested in https://docs.prebid.org/dev-docs/bidder-adaptor.html#submitting-your-adapter

e.g. multiformat_supported, ortb_blocking_supported, privacy_sandbox, and perhaps others

[prBigBrother]

@bretg Hi there, and thanks for your review! I've made the changes you suggested. Instead of "gpp_supported," I've replaced it with "gpp_sids" in the metadata field. Additionally, I've added some related fields.

Appreciate your help!