Add Realm.Configuration #3203

Job	Run time
Build for linux x64	2m 8s
Build for linux arm	2m 1s
Build for linux arm64	1m 35s
Build for windows x64	5m 57s
Build for windows ia32	6m 22s
Build for android x86_64	2m 21s
Build for android armeabi-v7a	2m 55s
Build for android arm64-v8a	3m 9s
Build for android x86	3m 0s
Build for darwin x64	4m 52s
Build for darwin arm64	3m 10s
Build for ios simulator	4m 11s
Build for ios catalyst	3m 51s
Build for ios ios	10m 8s
Bundle TypeScript	1m 46s
Generate Info.plist with all frameworks in place	33s
Integration tests (test:ci) for node on linux	8m 12s
Integration tests (test:ci:main) for electron on linux	6m 32s
Integration tests (test:ci:renderer) for electron on linux	6m 10s
Integration tests (test:ci:main) for electron on darwin	10m 25s
Integration tests (test:ci:renderer) for electron on darwin	7m 41s
Integration tests (test:ci) for node on darwin	10m 51s
Integration tests (test:ci:android) for react-native on android	18m 40s
Integration tests (test:ci:ios) for react-native on ios	26m 10s
	2h 32m 40s

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