feat: add label support (#331)

chore: add protos/ to .eslintignore
feat: .d.ts for protos

Author: yoshi-automation

packages/google-cloud-translate/.eslintignore

@@ -2,3 +2,4 @@
 src/**/doc/*
 build/
 docs/
+protos/

packages/google-cloud-translate/README.md

@@ -89,6 +89,7 @@ has instructions for running the samples.
 
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |
+| Hybrid Glossaries | [source code](https://github.com/googleapis/nodejs-translate/blob/master/samples/hybridGlossaries.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-translate&page=editor&open_in_editor=samples/hybridGlossaries.js,samples/README.md) |
 | Quickstart | [source code](https://github.com/googleapis/nodejs-translate/blob/master/samples/quickstart.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-translate&page=editor&open_in_editor=samples/quickstart.js,samples/README.md) |
 | Translate | [source code](https://github.com/googleapis/nodejs-translate/blob/master/samples/translate.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-translate&page=editor&open_in_editor=samples/translate.js,samples/README.md) |