docs: 引入 Fumadocs

ci: set up github actions

docs/source.config.ts

@@ -0,0 +1,23 @@
+import {
+  defineConfig,
+  defineDocs,
+  frontmatterSchema,
+  metaSchema,
+} from 'fumadocs-mdx/config';
+
+// You can customise Zod schemas for frontmatter and `meta.json` here
+// see https://fumadocs.dev/docs/mdx/collections#define-docs
+export const docs = defineDocs({
+  docs: {
+    schema: frontmatterSchema,
+  },
+  meta: {
+    schema: metaSchema,
+  },
+});
+
+export default defineConfig({
+  mdxOptions: {
+    // MDX options
+  },
+});