feat(hooks): add useTheme

Author: akinoccc

packages/core/index.ts

@@ -2,7 +2,7 @@ import styled from './src/styled'
 
 export * from './src/providers/theme'
 export * from './src/helper'
-// export * from './hooks'
+export * from './src/hooks'
 
 export * from './src/styled'
 

packages/core/src/hooks/index.ts

@@ -0,0 +1 @@
+export * from './useTheme'

packages/core/src/hooks/useTheme.ts

@@ -0,0 +1,6 @@
+import { DefaultTheme } from '@/src/providers/theme'
+import { inject } from 'vue'
+
+export const useTheme = () => {
+  return inject<DefaultTheme>('$theme', {})
+}