Add progress for files status command

[dimitrystd]

I have seen how people uses files status command. The problem with waiting time, it can take 10-30 sec on average project, but people doesn't see any feedback from cli after 5-10sec and terminate the command.

Possible solutions:

• (optional) Render information per file right after receiving it. Right now table is rendered when is completed
• (required) Show progress to user. Something like Progress 10%

DoD: Write live progress to stderr

[seletskiy]

@dimitrystd: I've added very simple progress indicator to files status command, both for *nix and windows.

[seletskiy]

@dimitrystd: It's impossible to render evenly spaced table (e.g. properly columnized) and render data as soon as it comes from API. So, we need to choose: a) render table properly when data is ready; b) or render not columnzied properly but when next chunk of data arrives.

[dimitrystd]

Is it possible to write a progress into stderr and then render table when data is ready?

[seletskiy]

@dimitrystd: It's already done.

[dimitrystd]

Tested