feat(form): export FormItemRule and FormRules (#345)

* fix: tsconfig support ts

* feat: form export FormItemRule and FormRules type

CHANGELOG.en-US.md

@@ -10,6 +10,7 @@
 - `n-menu` add `dropdown-placement` prop.
 - `n-upload` add `before-upload` prop.
 - Support the enter key on the numeric keypad.
+- `n-form` export `FormItemRule` & `FormRules` type.
 
 ### Fixes
 

CHANGELOG.zh-CN.md

@@ -10,6 +10,7 @@
 - `n-menu` 新增 `dropdown-placement` 属性
 - `n-upload` 新增 `before-upload` 属性
 - 支持小键盘的 enter 键
+- `n-form` 导出 `FormItemRule` & `FormRules` 类型
 
 ### Fixes
 

src/form/index.ts

@@ -10,7 +10,12 @@ export type {
   FormItemGiProps,
   FormItemGiProps as FormItemGridItemProps
 } from './src/FormItemGridItem'
-export type { FormInst, FormItemInst } from './src/interface'
+export type {
+  FormInst,
+  FormItemInst,
+  FormItemRule,
+  FormRules
+} from './src/interface'
 
 // deprecated
 export { default as NFormItemCol } from './src/FormItemCol'