TX CLI pull job fails with a throttling message

[foteinigk]

Add retry mechanism on the following requests (wrap the api call inside handleRetry function):

• get resource
• create resource
• get language statistics
• get all languages

Improve the Retry error message printed in the terminal

• Include the response code at printed message
• in case of 502, 503, 504 response codes, a retryAfter header is not included in response, we can retry after 10 seconds instead of 1.

Output example:

[svaloumas]

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