Refactor RadioGroup component

[XianQijing]

• props
• [x] 绑定值modelValue
  • [x] 类型为string / number / boolean
• [x] 单选框尺寸size
  • [x] 类型为string
  • [x] 可选值medium / small / mini/''
• [x] 是否禁用disabled
  • [x] 类型为boolean
  • [x] 默认false
• [x] 文本颜色text-color
  • [x] 类型为string
  • [x] 默认#ffffff
• [x] 按钮形式的 Radio 激活时的填充色和边框色
  • [x] 类型为string
  • [x] 默认#409EFF
• event
• [x] modelValue改变时，触发change