feat(article): reading time (#204)

* add reading time feature

* Revert change in jsconfig.json

* feat: add article.readingTime param, and improve style

* Revert change in jsconfig.json x2

* Remove reading time in compact layout

It doesn't look right to me for now

* feat: add i18n support to reading time string

* Hide footer.article-time when there's not content

Co-authored-by: Jimmy Cai <github@jimmycai.com>

layouts/partials/article/components/details.html

@@ -21,12 +21,25 @@
     </h3>
     {{ end }}
 
-    {{- if not .Date.IsZero -}}
+    {{ if or (not .Date.IsZero) (.Site.Params.article.readingTime) }}
     <footer class="article-time">
-        {{ partial "helper/icon" "clock" }}
-        <time class="article-time--published">
-            {{- .Date.Format (or .Site.Params.dateFormat.published "Jan 02, 2006") -}}
-        </time>
+        {{ if not .Date.IsZero }}
+            <div>
+                {{ partial "helper/icon" "date" }}
+                <time class="article-time--published">
+                    {{- .Date.Format (or .Site.Params.dateFormat.published "Jan 02, 2006") -}}
+                </time>
+            </div>
+        {{ end }}
+
+        {{ if .Site.Params.article.readingTime }}
+            <div>
+                {{ partial "helper/icon" "clock" }}
+                <time class="article-time--reading">
+                    {{ T "article.readingTime" .ReadingTime }}
+                </time>
+            </div>
+        {{ end }}
     </footer>
-    {{- end -}}
+    {{ end }}
 </div>