In card views, add showDescription as an alternative to showSummary

[chris-gillatt]

I've used a few themes for Hugo over the years, as as a result, some of my articles contain a summary (defined by the first body of text within a blog article that exists between the front matter and the article proper, separated by <!--more-->) and some do not. Some are also very long, because when I first started using hugo I probably wasn't using summary correctly.

Also, for me there's a use case to instead to show a slight expansion to the article title to entice readers, renders nicely in link previews without being truncated, and does not appear on the article itself when the site is built. Description could serve this purpose (and does so with other themes).

What are your thoughts on adding this additional functionality to Blowfish? I have a working version of this (at least with my configuration of Blowfish) and if this is accepted, I can issue a PR for review / further testing.

It expands on the existing logic in:

• card.html
• simple.html
• card-related.html

...with something like:

-      {{ if .Params.showSummary | default (.Site.Params.list.showSummary | default false) }}
+      {{ if .Params.showDescription | default (.Site.Params.list.showDescription | default false) }}
+      <div class="py-1 max-w-fit prose dark:prose-invert">
+        {{ .Params.description | plainify }}
+      </div>
+      {{ else if .Params.showSummary | default (.Site.Params.list.showSummary | default false) }}

...activated with showDescription = true in params.toml

In my testing, both showDescription and showSummary can work if they're both set to true, which although feels like overkill, may suit others' needs in future.

If anyone needs some screenshots to understand what I'm babbling about, please let me know.