Add `aliases` to `JsonValue` to enum value to be decoded from different JSON values #1179

Job	Run time
analyzer_and_format; Dart dev; PKGS: _test_yaml, checked_yaml, example, json_annotation, json_ser...	44s
mono_repo self validate	12s
analyzer_and_format; Dart 3.5.0; PKGS: _test_yaml, checked_yaml, example, json_annotation, json_s...	40s
unit_test; Dart 3.5.0; PKG: json_serializable; `dart test -p chrome`	0s
unit_test; Dart 3.5.0; PKG: json_serializable; `dart test --run-skipped -t presubmit-only test/an...	0s
unit_test; Dart 3.5.0; PKGS: _test_yaml, checked_yaml, example, json_serializable; `dart test`	0s
unit_test; Dart dev; PKG: json_serializable; `dart test --run-skipped -t presubmit-only test/anno...	0s
unit_test; Dart 3.5.0; PKG: json_serializable; `dart test --run-skipped -t presubmit-only test/en...	0s
unit_test; Dart dev; PKGS: _test_yaml, checked_yaml, example, json_serializable; `dart test`	0s
unit_test; Dart dev; PKG: json_serializable; `dart test --run-skipped -t presubmit-only test/ensu...	0s
unit_test; Dart dev; PKG: json_serializable; `dart test -p chrome`	0s
ensure_build; Dart 3.5.0; PKGS: _test_yaml, checked_yaml, example; `dart test --run-skipped -t pr...	0s
ensure_build; Dart dev; PKGS: _test_yaml, checked_yaml, example; `dart test --run-skipped -t pres...	0s
	1m 36s

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