feat: Add phone number validation to order confirmation

- Implemented phone number normalization and validation in custom_js.js.
- Added alert class to phone input on validation failure.
- Disabled confirm button until a valid phone number is entered.
- Updated custom.scss to style alert state for phone input.
- Modified footer.tpl to include a new custom JavaScript file.
- Updated head.tpl to reflect the new version of custom.css.
- Minor formatting adjustments in existing CSS and JS files.

themes/charme/templates/_partials/head.tpl

@@ -53,8 +53,7 @@
 {block name='stylesheets'}
   {include file="_partials/stylesheets.tpl" stylesheets=$stylesheets}
 {/block}
-
-<link rel="stylesheet" href="/themes/charme/assets/css/custom.css?ver=1.10028">
+<link rel="stylesheet" href="/themes/charme/assets/css/custom.css?ver=1.10030">
 
 {block name='javascript_head'}
   {include file="_partials/javascript.tpl" javascript=$javascript.head vars=$js_custom_vars}