🚸 (phone) Improve phone input behavior and validation

Now accepting landline phone numbers. Consistent select UI on every browser. Auto focus on country select.

packages/js/src/components/icons/ChevronDownIcon.tsx

@@ -0,0 +1,16 @@
+import { JSX } from 'solid-js/jsx-runtime'
+
+export const ChevronDownIcon = (props: JSX.SvgSVGAttributes<SVGSVGElement>) => (
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    viewBox="0 0 24 24"
+    fill="none"
+    stroke="currentColor"
+    stroke-width="2px"
+    stroke-linecap="round"
+    stroke-linejoin="round"
+    {...props}
+  >
+    <polyline points="6 9 12 15 18 9" />
+  </svg>
+)