feat: allow hiding author in post_meta (#1250)

* feat: allow hiding author in post_meta

For a person's site, in most cases the author is the person, and displaying it
on every post and list may be redundant.

Setting the `params.author` in the configuration to empty will achieve
the hidden effect, but it will also empty the value of `<meta name="author">`.

So add hideAuthor

layouts/partials/post_meta.html

@@ -12,9 +12,11 @@
 {{- $scratch.Add "meta" (slice (i18n "words" .WordCount | default (printf "%d words" .WordCount))) }}
 {{- end }}
 
+{{- if not (.Param "hideAuthor") -}}
 {{- with (partial "author.html" .) }}
 {{- $scratch.Add "meta" (slice .) }}
 {{- end }}
+{{- end }}
 
 {{- with ($scratch.Get "meta") }}
 {{- delimit . " · " -}}