Add Consume Entitlement endpoint and missing fields for SKUs and Entitlements #6399

Job	Run time
Test (nightly)	40s
Test (macOS)	1m 42s
MSRV	57s
Examples	4m 3s
Check minimal versions	38s
Build docs	40s
Test (unstable Discord API (no default features), unstable_discord_api, true)	31s
Test (no gateway)	1m 27s
Test (beta)	2m 7s
Test (unstable API + typesize, default unstable_discord_api typesize, true)	1m 11s
Test (builder without model, builder, true)	31s
Test (simd-json)	1m 50s
Test (Windows)	4m 53s
Test (unstable Discord API features)	1m 58s
Test (native-tls)	1m 42s
Test (chrono, chrono)	43s
Test (no default features)	38s
Test (no cache)	1m 47s
Test (stable)	1m 55s
	29m 53s

Provide feedback