chore: import upstream snapshot with attribution

integrations/chat/openapi.ts

@@ -0,0 +1,31 @@
+import { api, signals, version } from '@botpress/chat-api'
+import fs from 'fs'
+import path from 'path'
+
+const main = async (argv: string[]) => {
+  const outDir = argv[0]
+  if (!outDir) {
+    throw new Error('Missing output directory')
+  }
+
+  console.info('Generating OpenAPI server...')
+
+  await api.exportHandler(outDir)
+
+  const signalsDir = path.join(outDir, 'signals')
+  await signals.exportSchemas(signalsDir, { includeZodSchemas: false })
+
+  const versionDir = path.join(outDir, 'version.ts')
+  await fs.promises.writeFile(versionDir, `export const apiVersion = "${version}"`)
+
+  console.info('OpenAPI server generated')
+}
+
+void main(process.argv.slice(2))
+  .then(() => {
+    process.exit(0)
+  })
+  .catch((err) => {
+    console.error(err)
+    process.exit(1)
+  })