Add $defineProp

[zhiyuanzmj]

Clear and concise description of the problem

Add reactivity transform support to defineProp.

Suggested solution

<script setup lang="ts">
// Kevin's Edition
const foo = defineProp<string>()
const bar = $defineProp('bar', { default: 'bar', required: true })
const baz = $(defineProp('baz', { default: 'baz' }))
console.log(foo.value, bar, baz)

// Johnson's Edition
const foo = defineProp<string>()
const bar = $defineProp(() => 'bar', true)
const baz = $(defineProp('baz'))
console.log(foo.value, bar, baz)
</script>

Alternative

No response

Additional context

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