feat(input): Setting validation status and message. (#172)

* feat(input): Setting validation status and message.

* Update src/components/Input/composables/useInputClasses.ts

* Update docs/components/input/examples/InputValidationExample.vue

* Update docs/components/input/examples/InputValidationExample.vue

* Update docs/components/input.md

* Update docs/components/input.md

---------

Co-authored-by: Ilya Artamonov <ilya.sosidka@gmail.com>

docs/components/input/examples/InputHelperExample.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="vp-raw">
-    <Input placeholder="enter your first name" label="First name">
+    <Input v-model='name' placeholder="enter your first name" label="First name">
       <template #helper>
         We’ll never share your details. Read our <a href="#" class="font-medium text-blue-600 hover:underline dark:text-blue-500">Privacy Policy</a>.
       </template>
@@ -8,5 +8,8 @@
   </div>
 </template>
 <script lang="ts" setup>
+import { ref } from 'vue'
 import { Input } from '../../../../src/index'
+
+const name = ref('')
 </script>