Move template files based on Hugo v0.146 revamp

See https://gohugo.io/templates/new-templatesystem-overview/

Under layouts/
- mv _default/* .
- mv partials _partials
- mv shortcodes _shortcodes
- mv taxonomy/list.html taxonomy.html
- mv taxonomy/term.html term.html

layouts/_partials/page-metadata/item/authors.html

@@ -0,0 +1,16 @@
+{{ with .Params.authors }}
+    <span class="page-metadata-item" aria-label="{{ i18n "aria_post_meta_authors" }}">
+        {{ partial "icon.html" "user-circle" }}
+
+        {{ if index $.Site.Taxonomies "authors" }}
+            {{ $authors := slice }}
+            {{ range . }}
+                {{ $url := (printf "authors/%s" (. | anchorize)) | absLangURL }}
+                {{ $authors = $authors | append (printf `<a href="%s">%s</a>` $url .) }}
+            {{ end }}
+            {{ delimit $authors ", " | safeHTML }}
+        {{ else }}
+            {{ delimit . ", " }}
+        {{ end }}
+    </span>
+{{ end }}

layouts/_partials/page-metadata/item/categories.html

@@ -0,0 +1,11 @@
+{{ with (.GetTerms "categories") }}
+    {{ $categories := slice }}
+    {{ range . }}
+        {{ $categories = $categories | append (printf `<a href="%s">%s</a>` .Permalink .LinkTitle) }}
+    {{ end }}
+
+    <div class="page-metadata-section categories" aria-label="{{ i18n "aria_post_meta_categories" }}">
+        {{ partial "icon.html" "folder" }}
+        {{ delimit $categories ", " | safeHTML }}
+    </div>
+{{ end }}

layouts/_partials/page-metadata/item/edithistory.html

@@ -0,0 +1,8 @@
+{{ if and .Site.Params.gitHistoryURL .File.Path }}
+    <span class="page-metadata-item post-meta-edit-history" aria-label="{{ i18n "aria_post_meta_edit_history" }}">
+        {{ partial "icon.html" "history" }}
+        <a href="{{ printf "%s/content/%s" .Site.Params.gitHistoryURL .File.Path }}" target="_blank" rel="noopener">
+            {{- i18n "edit_history" -}}
+        </a>
+    </span>
+{{ end }}

layouts/_partials/page-metadata/item/readingtime.html

@@ -0,0 +1,6 @@
+{{ if ne .Site.Params.readingtime false }}
+    <span class="page-metadata-item" aria-label="{{ i18n "aria_post_meta_reading_time" }}">
+        {{ partial "icon.html" "clock" }}
+        {{ i18n "readingtime" .ReadingTime }}
+    </span>
+{{ end }}

layouts/_partials/page-metadata/item/series.html

@@ -0,0 +1,11 @@
+{{ with (.GetTerms "series") }}
+    {{ $series := slice }}
+    {{ range . }}
+        {{ $series = $series | append (printf `<a href="%s">%s</a>` .Permalink .LinkTitle) }}
+    {{ end }}
+
+    <div class="page-metadata-section series" aria-label="{{ i18n "aria_post_meta_series" }}">
+        {{ partial "icon.html" "files" }}
+        {{ delimit $series ", " | safeHTML }}
+    </div>
+{{ end }}

layouts/_partials/page-metadata/item/tags.html

@@ -0,0 +1,11 @@
+{{ with (.GetTerms "tags") }}
+    {{ $tags := slice }}
+    {{ range . }}
+        {{ $tags = $tags | append (printf `<a href="%s">%s</a>` .Permalink .LinkTitle) }}
+    {{ end }}
+
+    <div class="page-metadata-section tags" aria-label="{{ i18n "aria_post_meta_tags" }}">
+        {{ partial "icon.html" "tag" }}
+        {{ delimit $tags ", " | safeHTML }}
+    </div>
+{{ end }}

layouts/_partials/page-metadata/item/viewraw.html

@@ -0,0 +1,8 @@
+{{ with .OutputFormats.Get "markdown" }}
+    <span class="page-metadata-item post-meta-view-markdown" aria-label="{{ i18n "aria_post_meta_view_markdown" }}">
+        {{ partial "icon.html" "code" }}
+        <a href="{{ .Permalink }}" target="_blank">
+            {{- i18n "view_markdown" -}}
+        </a>
+    </span>
+{{ end }}