chore(hiui): add portal-context package (#3070)

Author: zyprepare

.changeset/forty-pumpkins-begin.md

@@ -0,0 +1,5 @@
+---
+"@hi-ui/hiui": patch
+---
+
+chore(hiui): add portal-context package

packages/ui/hiui/src/index.ts

@@ -93,6 +93,9 @@ export * from '@hi-ui/locale-context'
  */
 export { default as LocaleContext } from '@hi-ui/locale-context'
 
+export * from '@hi-ui/portal-context'
+export { default as PortalContext } from '@hi-ui/portal-context'
+
 export * from '@hi-ui/menu'
 export { default as Menu } from '@hi-ui/menu'