Implement Phase 6 & 7: My Account and Order Details templates (Bootstrap 5, HPOS)

Phase 6 - My Account (15 templates):
- Account layout with sidebar navigation (list-group) and content area
- Orders table with status badges, pagination, and responsive design
- View order with order notes as list-group items
- Address cards with edit/add buttons
- Login/Register side-by-side card layout
- Account edit, password change, downloads, payment methods forms
- Lost/reset password forms and confirmation

Phase 7 - Order Details (5 templates):
- Order details table with items, totals, and customer note
- Line item rows with refund quantity display
- Customer billing/shipping address cards
- Order tracking form
- Order again button

All order templates use WC_Order object methods only (HPOS compatible).
Bootstrap 5 components: cards, tables, list-groups, badges, forms, alerts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/myaccount/navigation.html.twig

@@ -0,0 +1,23 @@
+{#
+ # My Account Navigation (Bootstrap 5 Override)
+ #
+ # Renders the sidebar navigation for the My Account area
+ # using Bootstrap list-group component.
+ #
+ # WooCommerce PHP equivalent: myaccount/navigation.php
+ #
+ # @package WcBootstrap
+ # @since 0.1.0
+ #}
+
+<nav class="woocommerce-MyAccount-navigation" aria-label="{{ __('Account navigation') }}">
+    <div class="list-group">
+        {% for endpoint, label in wc_get_account_menu_items() %}
+            <a href="{{ wc_get_account_endpoint_url(endpoint)|esc_url }}"
+               class="list-group-item list-group-item-action{% if wc_get_account_menu_item_classes(endpoint) matches '/is-active/' %} active{% endif %}"
+               {% if wc_get_account_menu_item_classes(endpoint) matches '/is-active/' %}aria-current="page"{% endif %}>
+                {{ label|esc_html }}
+            </a>
+        {% endfor %}
+    </div>
+</nav>