refactor: use TOML for configuration file (#1228)

* refactor: remove jsconfig.json

* chore: remove devcontainer config

* refactor: migrate Hugo configuration from `hugo.yaml` to dedicated `module.toml` and `params.toml` files, and update minimum Hugo version.

* refactor: migrate demo site configuration from `hugo.yaml` to `config/_default/*.toml`

* feat: enable local sidebar avatar for demo site and relocate its image to demo assets.

* feat: migrate demo site to Hugo Modules for theme management.

* fix: wrong config folder name

demo/config/_default/hugo.toml

@@ -0,0 +1,26 @@
+baseURL      = "https://example.com/"
+languageCode = "en-us"
+title        = "Example Site"
+copyright    = "Example Person"
+
+# Theme i18n support
+# Available values: ar, bn, ca, de, el, en, es, fr, hu, id, it, ja, ko, nl, pt-br, th, uk, zh-cn, zh-hk, zh-tw
+defaultContentLanguage = "en"
+
+# Set hasCJKLanguage to true if DefaultContentLanguage is in [zh-cn ja ko]
+# This will make .Summary and .WordCount behave correctly for CJK languages.
+hasCJKLanguage = false
+
+[[module.imports]]
+path = "github.com/CaiJimmy/hugo-theme-stack/v3"
+
+
+[pagination]
+    pagerSize = 3
+
+[permalinks]
+    post = "/p/:slug/"
+    page = "/:slug/"
+
+[services.disqus]
+    shortname = "hugo-theme-stack"

demo/config/_default/languages.toml

@@ -0,0 +1,35 @@
+[en]
+    languageName = "English"
+    title        = "Example Site"
+    weight       = 1
+    [en.params.sidebar]
+        subtitle = "Example description"
+
+[zh-cn]
+    languageName = "简体中文"
+    title        = "演示站点"
+    weight       = 2
+    [zh-cn.params.sidebar]
+        subtitle = "演示说明"
+
+[zh-tw]
+    languageName = "正體中文"
+    title        = "演示站點"
+    weight       = 2
+    [zh-tw.params.sidebar]
+        subtitle = "演示說明"
+
+[ja]
+    languageName = "日本語"
+    title        = "サンプルサイト"
+    weight       = 2
+    [ja.params.sidebar]
+        subtitle = "サンプル説明"
+
+[ar]
+    languageName      = "عربي"
+    languagedirection = "rtl"
+    title             = "موقع تجريبي"
+    weight            = 3
+    [ar.params.sidebar]
+        subtitle = "وصف تجريبي"

demo/config/_default/markup.toml

@@ -0,0 +1,24 @@
+[goldmark]
+    [goldmark.extensions]
+        [goldmark.extensions.passthrough]
+            enable = true
+            [goldmark.extensions.passthrough.delimiters]
+                block  = [["\\[", "\\]"], ["$$", "$$"]]
+                inline = [["\\(", "\\)"]]
+    [goldmark.renderer]
+        ## Set to true if you have HTML content inside Markdown
+        unsafe = true
+
+[tableOfContents]
+    endLevel   = 4
+    ordered    = true
+    startLevel = 2
+
+[highlight]
+    noClasses          = false
+    codeFences         = true
+    guessSyntax        = true
+    lineNoStart        = 1
+    lineNos            = true
+    lineNumbersInTable = true
+    tabWidth           = 4

demo/config/_default/menu.toml

@@ -0,0 +1,13 @@
+[[social]]
+    identifier = "github"
+    name       = "GitHub"
+    url        = "https://github.com/CaiJimmy/hugo-theme-stack"
+    [social.params]
+        icon = "brand-github"
+
+[[social]]
+    identifier = "twitter"
+    name       = "Twitter"
+    url        = "https://twitter.com"
+    [social.params]
+        icon = "brand-twitter"

demo/config/_default/params.toml

@@ -0,0 +1,37 @@
+mainSections   = ["post"]
+rssFullContent = true
+favicon        = ""
+
+[footer]
+    since = 2020
+
+[dateFormat]
+    published   = "Jan 02, 2006"
+    lastUpdated = "Jan 02, 2006 15:04 MST"
+
+[sidebar]
+    emoji    = "🍥"
+    subtitle = "Lorem ipsum dolor sit amet, consectetur adipiscing elit."
+    [sidebar.avatar]
+        enabled = true
+        local   = true
+        src     = "img/avatar.png"
+
+[article]
+    [article.license]
+        enabled = true
+        default = "Licensed under CC BY-NC-SA 4.0"
+
+[widgets]
+    homepage = [
+        { type = "search" },
+        { type = "archives", params = { limit = 5 } },
+        { type = "categories", params = { limit = 10 } },
+        { type = "tag-cloud", params = { limit = 10 } },
+    ]
+    page = [{ type = "toc" }]
+
+[comments]
+    # See complete configuration in config/_default/params.toml
+    enabled  = true
+    provider = "disqus"

demo/config/_default/related.toml

@@ -0,0 +1,8 @@
+includeNewer = true
+threshold    = 60
+toLower      = false
+
+indices = [
+    { name = "tags", weight = 100 },
+    { name = "categories", weight = 200 },
+]