Add dropzone to monopackage (#6310)

Author: yihuiliao

packages/@adobe/react-spectrum/package.json

@@ -57,6 +57,7 @@
     "@react-spectrum/dialog": "^3.8.9",
     "@react-spectrum/divider": "^3.5.11",
     "@react-spectrum/dnd": "^3.3.8",
+    "@react-spectrum/dropzone": "^3.0.0-rc.3",
     "@react-spectrum/filetrigger": "^3.0.0",
     "@react-spectrum/form": "^3.7.4",
     "@react-spectrum/icon": "^3.7.11",

packages/@adobe/react-spectrum/src/index.ts

@@ -28,6 +28,7 @@ export {ContextualHelp} from '@react-spectrum/contextualhelp';
 export {AlertDialog, Dialog, DialogTrigger, DialogContainer, useDialogContainer} from '@react-spectrum/dialog';
 export {DateField, DatePicker, DateRangePicker, TimeField} from '@react-spectrum/datepicker';
 export {Divider} from '@react-spectrum/divider';
+export {DropZone} from '@react-spectrum/dropzone';
 export {FileTrigger} from '@react-spectrum/filetrigger';
 export {Form} from '@react-spectrum/form';
 export {Icon} from '@react-spectrum/icon';
@@ -82,6 +83,7 @@ export type {SpectrumContextualHelpProps} from '@react-spectrum/contextualhelp';
 export type {DialogContainerValue, SpectrumAlertDialogProps, SpectrumDialogContainerProps, SpectrumDialogProps, SpectrumDialogTriggerProps} from '@react-spectrum/dialog';
 export type {SpectrumDateFieldProps, SpectrumDatePickerProps, SpectrumDateRangePickerProps, SpectrumTimeFieldProps} from '@react-spectrum/datepicker';
 export type {SpectrumDividerProps} from '@react-spectrum/divider';
+export type {SpectrumDropZoneProps} from '@react-spectrum/dropzone';
 export type {FileTriggerProps} from '@react-spectrum/filetrigger';
 export type {SpectrumFormProps} from '@react-spectrum/form';
 export type {IconProps, IllustrationProps} from '@react-spectrum/icon';