refactor: move docs and examples to src folder, update README with accurate benchmarks

examples/demo/views/pages/product-detail.pug

@@ -1,65 +0,0 @@
-extends layouts/base.pug
-
-block title
-  title #{productName} | Pugz Store
-
-block content
-  section.page-header
-    .container
-      .breadcrumb
-        a(href="/") Home
-        span /
-        a(href="/products") Products
-        span /
-        span #{productName}
-
-  section.section
-    .container
-      .product-detail
-        .product-detail-image
-          .product-image-placeholder
-        .product-detail-info
-          span.product-category #{category}
-          h1 #{productName}
-          .product-price-large $#{price}
-          p.product-description #{description}
-
-          .product-actions
-            .quantity-selector
-              label Quantity:
-              button.qty-btn -
-              input.qty-input(type="text" value="1")
-              button.qty-btn +
-            a.btn.btn-primary.btn-lg(href="/cart") Add to Cart
-
-          .product-meta
-            p SKU: #{sku}
-            p Category: #{category}
-
-  section.section.section-alt
-    .container
-      h2 You May Also Like
-      .product-grid
-        .product-card
-          .product-image
-          .product-info
-            span.product-category Electronics
-            h3.product-name Smart Watch Pro
-            .product-price $199.99
-            a.btn.btn-sm(href="/products/2") View Details
-
-        .product-card
-          .product-image
-          .product-info
-            span.product-category Accessories
-            h3.product-name Laptop Stand
-            .product-price $49.99
-            a.btn.btn-sm(href="/products/3") View Details
-
-        .product-card
-          .product-image
-          .product-info
-            span.product-category Accessories
-            h3.product-name USB-C Hub
-            .product-price $39.99
-            a.btn.btn-sm(href="/products/4") View Details