Add NeuraPress vendor entry point for editor (#783)

dashboard/vendor/neurapress/src/index.ts

@@ -0,0 +1,8 @@
+import { convertToWechat, defaultOptions } from './lib/markdown'
+import { getExampleContent } from './lib/utils/loadExampleContent'
+
+export const neurapressSample = getExampleContent()
+
+export function renderMarkdown(markdown: string): string {
+  return convertToWechat(markdown, defaultOptions)
+}