feat(InputNumber): implement component (#2577)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/app/components/content/examples/input-number/InputNumberDecimalExample.vue

@@ -0,0 +1,13 @@
+<script setup lang="ts">
+const value = ref(5)
+</script>
+
+<template>
+  <UInputNumber
+    v-model="value"
+    :format-options="{
+      signDisplay: 'exceptZero',
+      minimumFractionDigits: 1
+    }"
+  />
+</template>