Standardize Job Status

[thiagopnts]

right now its just a string and we just use whatever comes from the Provider with a few of our own. We should standardize this, and have a stable list of possible status for each Job

[markx]

Won't do.

[thiagopnts]

@markx why we don't want this anymore?

[markx]

@thiagopnts Because we decided to do it on the MF API, right?

[thiagopnts]

@markx yes, for media factory<->scoop communication. This one is for the captions API only, having something standard here makes it easier to handle job status, better docs etc