chore(typescript): migrate components (#53)

src/runtime/components/elements/Icon.vue

@@ -2,7 +2,9 @@
   <Icon :icon="icon" />
 </template>
 
-<script setup>
+<script setup lang="ts">
+import type { Ref } from 'vue'
+import type { IconifyIcon } from '@iconify/vue'
 import { ref, watch } from 'vue'
 import { Icon } from '@iconify/vue/dist/offline'
 import { loadIcon } from '@iconify/vue'
@@ -14,7 +16,7 @@ const props = defineProps({
   }
 })
 
-const icon = ref(null)
+const icon: Ref<IconifyIcon> = ref(null)
 icon.value = await loadIcon(props.name)
 
 watch(() => props.name, async () => {