chore: Re-organise files,remove T&C modal in cart

- Moved product query and filters engine to `product_data_engine` folder
- Moved product grid, list, search, view to `product_ui` folder
- Renamed `website_item_indexing.py` to `redisearch.py`
- Render Terms and Conditions server side along with the rest of the Shopping cart. Don’t make another db call
- Style changes to terms and conditions
- Deleted unused `cart_terms.html`
- Removed print statements

erpnext/public/scss/shopping_cart.scss

@@ -844,6 +844,14 @@ body.product-page {
 			}
 		}
 	}
+
+	.t-and-c-container {
+		padding: 1.5rem;
+	}
+
+	.t-and-c-terms {
+		font-size: 14px;
+	}
 }
 
 .cart-empty.frappe-card {