feat(checkbox): v15 (#2880)

Author: oasis-cloud

src/config.json

@@ -481,6 +481,7 @@
           "sort": 4,
           "show": true,
           "taro": true,
+          "v15": true,
           "author": "oasis"
         },
         {

src/packages/checkbox/checkbox.scss

@@ -13,6 +13,8 @@
     color: $color-primary;
     transition-duration: 0.3s;
     transition-property: color, border-color, background-color;
+    box-shadow: 0px 2px 4px 0px #ff0f2333;
+    border-radius: 50%;
 
     &.nut-checkbox-icon-disabled {
       color: $color-primary-disabled-special;
@@ -31,6 +33,8 @@
 
   &-icon-indeterminate {
     color: $color-primary;
+    box-shadow: 0px 2px 4px 0px #ff0f2333;
+    border-radius: 50%;
 
     &.nut-checkbox-icon-disabled {
       color: $color-primary-disabled-special;
@@ -39,6 +43,7 @@
 
   &-icon-disabled {
     color: $color-text-disabled;
+    box-shadow: none;
   }
 
   &-reverse {