Docs: add config param + shortcode for bug reporting button

web/project-website/config.toml

@@ -115,3 +115,6 @@ enableRobotsTXT = true
   [params.geekdocContentLicense]
     name = "CC BY 4.0 - Blender Foundation"
     link = "https://creativecommons.org/licenses/by/4.0/"
+
+  [params.flamenco]
+    bugreportURL = "https://projects.blender.org/studio/flamenco/issues/new?template=.gitea%2fissue_template%2fbug.yaml"

web/project-website/content/development/get-involved/_index.md

@@ -9,7 +9,7 @@ Join the community on the [#flamenco channel][chat] of Blender Chat do discuss
 development topics. New faces are always welcome!
 
 {{< button size="large" relref="/development/getting-started" >}}Get Started Developing Flamenco{{< /button >}}
-{{< button size="large" href="https://projects.blender.org/studio/flamenco/issues/new?template=.gitea%2fissue_template%2fbug.yaml" >}}Report a Bug{{< /button >}}
+{{< flamenco/reportBugButton size="large" >}}
 
 If you want to know what kind of work can be done, take a look at the
 [workboard][workboard].

web/project-website/layouts/shortcodes/flamenco/reportBugButton.html

@@ -0,0 +1,19 @@
+{{/* This is an adjusted copy of themes/hugo-geekdoc/layouts/shortcodes/button.html */}}
+{{- $ref := .Page.Site.Params.Flamenco.bugreportURL -}}
+{{- $class := "" }}
+{{- $size := default "regular" (.Get "size" | lower) }}
+
+{{- if not (in (slice "regular" "large" "small") $size) }}
+  {{- $size = "regular" }}
+{{- end }}
+
+{{- with .Get "class" }}
+  {{- $class = . }}
+{{- end }}
+
+<span class="gdoc-button gdoc-button--{{ $size }}{{ with $class }}{{ printf " %s" . }}{{ end }}">
+  <a
+    class="gdoc-button__link"
+    {{- with $ref }}{{ printf " href=\"%s\"" . | safeHTMLAttr }}{{ end }}
+  >Report a Bug</a>
+</span>