fix: Expose the Baidu error if translation is not successful

[nickolay168]

If Baidu returns an error, we are getting the exception "Failed to translate 'some text' to 'some language': '' ". In this PR I have added the simple code to expose the error message. Below is the example of error, returned from Baidu.

{"errno":995,"errmsg":"request is not authorized","data":null,"logid":"1816048379","extra":"cgKinifGvSXVvMgFRVG88bkl13vdIyraxKRVaS33xbc="}

---

This change is 

[github-actions]

Tip

Preview URL:

[nickolay168]

I have found an issue with the PR.

1. The initial code, doing iteration used to get to the iterator end and the error was not surfaced.
2. I have added a retries to deal with google API throttling

The question if we need to somehow supopress the error if the user is not authorized on Baidu? After the PR the translation to Lojban will always fail on the ground and on CI/CD unless we have a valid key.