feat: add docs

docs/mkdocs.yml

@@ -0,0 +1,33 @@
+site_name: SaveAnyBot 官方文档
+site_author: Krau
+site_description: SaveAnyBot 是一个可以保存 Telegram 上的文件到多种云存储的机器人, 本文档将帮助你了解如何部署和使用它.
+repo_name: krau/saveany-bot
+repo_url: https://github.com/krau/saveany-bot
+copyright: CC BY-NC-SA 4.0
+theme:
+  name: material
+  language: zh
+  highlightjs: true
+  palette:
+    - media: "(prefers-color-scheme)"
+      toggle:
+        icon: material/brightness-auto
+        name: 切换主题
+    - media: "(prefers-color-scheme: light)"
+      scheme: default
+      primary: indigo
+      toggle:
+        icon: material/brightness-7
+        name: 暗色模式
+    - media: "(prefers-color-scheme: dark)"
+      scheme: slate
+      primary: blue grey
+      toggle:
+        icon: material/brightness-4
+        name: 亮色模式
+
+nav:
+  - index.md
+  - deploy.md
+  - help.md
+  - faq.md