docs: 引入 Fumadocs

ci: set up github actions

docs/scripts/generate-docs.ts

@@ -0,0 +1,10 @@
+import { generateFiles } from 'fumadocs-openapi';
+import { openapi } from '@/lib/openapi';
+
+void generateFiles({
+  input: openapi,
+  output: './content/docs/openapi/(generated)',
+  // we recommend to enable it
+  // make sure your endpoint description doesn't break MDX syntax.
+  includeDescription: true,
+});