docs(samples): add auto-generated Node samples (#488)

* docs(samples): add auto-generated Node samples build(generator): find protoc based on its bazel location

PiperOrigin-RevId: 398604509

Source-Link: googleapis/googleapis@6ef16b9

Source-Link: https://github.com/googleapis/googleapis-gen/commit/8314e1ead3e906dbf2012ced8d92f2bc8dd45c95
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiODMxNGUxZWFkM2U5MDZkYmYyMDEyY2VkOGQ5MmYyYmM4ZGQ0NWM5NSJ9

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* build: update samples engine

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Sofia Leon <sofialeon@google.com>

container/snippets/package.json

@@ -3,7 +3,7 @@
   "license": "Apache-2.0",
   "author": "Google Inc.",
   "engines": {
-    "node": ">=8"
+    "node": ">=10"
   },
   "repository": "googleapis/nodejs-cloud-container",
   "private": true,