feat(giscus): standardize configuration, support i18n and add lazyLoading config

exampleSite/config.toml

@@ -500,6 +500,8 @@ enableEmoji = true
         avatar = "mp"
         meta= ""
         pageSize = 10
+        # automatically adapt the current theme i18n configuration when empty
+        # 为空时自动适配当前主题 i18n 配置
         lang = ""
         visitor = true
         recordIP = true
@@ -524,6 +526,8 @@ enableEmoji = true
         width = "100%"
         numPosts = 10
         appId = ""
+        # automatically adapt the current theme i18n configuration when empty
+        # 为空时自动适配当前主题 i18n 配置
         languageCode = ""
       # Telegram comments config (https://comments.app/)
       # Telegram comments 评论系统设置 (https://comments.app/)
@@ -550,25 +554,26 @@ enableEmoji = true
         label = ""
         lightTheme = "github-light"
         darkTheme = "github-dark"
+      # giscus comment config (https://giscus.app/)
+      # giscus comment 评论系统设置 (https://giscus.app/zh-CN)
       [params.page.comment.giscus]
-        # To enable giscus, the github discussions based comment section,
-        # Follow the steps described to enable giscus and get the values
-        # needed to populate the below information.
-        # https://www.joelnitta.com/posts/2021-11-24_using-giscus/
-        # enable = true
-        category = "Announcements" # Announcements, Comments
-        lang = "en" # 保持 en, 只需要控制每篇文章的 url 不一样即可
-        repo = "" # Entering repo will enable giscus
-        repo_id = "" # query by GraphQL API, https://docs.github.com/en/graphql/overview/explorer
-        category_id = "" # query by GraphQL API, https://docs.github.com/en/graphql/overview/explorer
+        # You can refer to the official documentation of giscus to use the following configuration.
+        # 你可以参考官方文档来使用下列配置
+        enable = false
+        repo = ""
+        repoId = ""
+        category = "Announcements"
+        categoryId = ""
+        # automatically adapt the current theme i18n configuration when empty
+        # 为空时自动适配当前主题 i18n 配置
+        lang = ""
         mapping = "pathname"
-        reactions_enabled = "0"
-        emit_metadata = "0"
-        input_position = "top"
-        lightTheme = "light" # github theme
-        darkTheme = "dark" # github theme
-        crossorigin = "anonymous"
-        label = "Comment" # Label applied to issue by utteranc.es bot
+        reactionsEnabled = "1"
+        emitMetadata = "0"
+        inputPosition = "bottom"
+        lazyLoading = false
+        lightTheme = "light"
+        darkTheme = "dark"
     # Third-party library config
     # 第三方库配置
     [params.page.library]