How to Create Bootstrap Shopify Menu Bootstrap Navbar - shopify

Question

I would like to create a "Live Preview" button for themes in Shopify. Think about each theme as a product in Shopify and each theme product page has a "Live Preview" button that goes to the live demo page of the theme.
I would like to list all of my themes to my Shopify website with CSV ...
<div class="mainmenu-area navbar-light bg-light">
<div class="container">
<div class="row">
<div class="col-md-12">
<nav class="navbar navbar-expand-lg">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav"
aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
{% for link in linklists.main-menu.links %}
{% assign child_list_handle = link.title | handleize %}
{% if linklists[child_list_handle].links != blank %}
<li class="nav-item">
<a class="nav-link dropdown-toggle" id="navbarDropdown" role="button" data-bs-toggle="dropdown" href="{{ link.url }}">{{ link.title }}</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
{% for childlink in linklists[child_list_handle].links %}
<li>
<a class="dropdown-item" href="{{ childlink.url }}">{{ childlink.title | escape }}</a>
</li>
{% endfor %}
</ul>
</li>
{% else %}
<li class="nav-item">
<a class="nav-link" href="{{ link.url }}">{{ link.title }}</a>
</li>
{% endif %}
{% endfor %}
<li class="nav-item">
<a class="nav-link" href="/cart">Cart</a>
</li>
</ul>
</div>
</div>
</nav>
</div>
</div>
</div>
</div>
Here is the custom development on Shopify menus