chore: 初始化 Hugo 博客项目

Hextra 主题，8 篇文章，支持全文搜索/暗色模式

themes/hextra/layouts/_markup/render-codeblock.html

@@ -0,0 +1,13 @@
+{{- $class := .Attributes.class | default "" -}}
+{{- $filename := .Attributes.filename | default "" -}}
+{{- $base_url := .Attributes.base_url | default "" -}}
+{{- $lang := .Attributes.lang | default .Type -}}
+
+
+<div class="hextra-code-block hx:relative hx:mt-6 hx:first:mt-0 hx:group/code">
+  {{- partial "components/codeblock" (dict "filename" $filename "lang" $lang "base_url" $base_url "content" .Inner "options" .Options) -}}
+
+  {{- if or (eq site.Params.highlight.copy.enable nil) (site.Params.highlight.copy.enable) -}}
+    {{- partialCached "components/codeblock-copy-button" (dict "filename" $filename) $filename -}}
+  {{- end -}}
+</div>