Add secondary & tertiary buttons + Add utils index

src/routes/components/TextInput.md

@@ -1,8 +1,9 @@
 ```svelte example raised
 <script lang="ts">
     import { TextInput } from "omorphia";
+    import IconSearch from 'virtual:icons/heroicons-outline/search'
 </script>
 
-<TextInput>Favorite color</TextInput>
 <TextInput placeholder="Enter another color..." />
+<TextInput icon={IconSearch} placeholder="Search..." />
 ```