[feat] Logo

[rochacbruno]

When on marmite.yaml there is

banner_image: media/image.png
card_image: media/og_card.png

Those 2 are currently used for og _image and banner,

It is missing a logo

logo_image: media/logo.png

Then this data will be available on templates

{%if site.logo_image %}
<img src="{{ url_for(path=site.logo_image) }}" />
{% endif %}

Change the templates to allow this customization.

---

The builtin template should show the logo instead of site title in the menu