feat(api): add custom endpoint support to API #6279

Job	Run time
prebuild	3m 15s
bundle-size-tests / Bundle size tests	1m 43s
dependency-review / Dependency Review	7s
github-actions-test / Github Action format test	27s
license-test / License tests	26s
tsc-compliance-test / TSC Compliance Test	39s
unit-tests / get-package-list / Get packages list	1m 37s
unit-tests / Unit Test - @aws-amplify/adapter-nextjs	59s
unit-tests / Unit Test - @aws-amplify/analytics	1m 5s
unit-tests / Unit Test - @aws-amplify/api	52s
unit-tests / Unit Test - @aws-amplify/api-graphql	1m 6s
unit-tests / Unit Test - @aws-amplify/api-rest	44s
unit-tests / Unit Test - @aws-amplify/auth	2m 26s
unit-tests / Unit Test - aws-amplify	1m 9s
unit-tests / Unit Test - @aws-amplify/core	1m 27s
unit-tests / Unit Test - @aws-amplify/datastore	3m 59s
unit-tests / Unit Test - @aws-amplify/datastore-storage-adapter	1m 3s
unit-tests / Unit Test - @aws-amplify/geo	57s
unit-tests / Unit Test - @aws-amplify/interactions	46s
unit-tests / Unit Test - @aws-amplify/notifications	1m 8s
unit-tests / Unit Test - @aws-amplify/predictions	58s
unit-tests / Unit Test - @aws-amplify/pubsub	50s
unit-tests / Unit Test - @aws-amplify/react-native	35s
unit-tests / Unit Test - @aws-amplify/rtn-push-notification	39s
unit-tests / Unit Test - @aws-amplify/rtn-web-browser	27s
unit-tests / Unit Test - @aws-amplify/storage	2m 3s
Unit and Bundle tests have passed	1s
ci - Unit and Bundle tests have passed	1s
	31m 29s

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