refactor: reorganize all components (#8303)

src/radio/Radio.tsx

@@ -1,11 +1,20 @@
+import { defineComponent } from 'vue';
+
+// Utils
 import { pick, createNamespace } from '../utils';
+import { RADIO_KEY, RadioGroupProvide } from '../radio-group/RadioGroup';
+
+// Composables
 import { useParent } from '@vant/use';
+
+// Components
 import Checker, { checkerProps } from '../checkbox/Checker';
-import { RADIO_KEY, RadioGroupProvide } from '../radio-group';
 
-const [createComponent, bem] = createNamespace('radio');
+const [name, bem] = createNamespace('radio');
+
+export default defineComponent({
+  name,
 
-export default createComponent({
   props: checkerProps,
 
   emits: ['update:modelValue'],

src/radio/index.ts

@@ -0,0 +1,7 @@
+import { installable } from '../utils';
+import _Radio from './Radio';
+
+const Radio = installable(_Radio);
+
+export default Radio;
+export { Radio };