Add tqdm module

[mirusu400]

Now we can easily check the download progress instead of looks like lagging.

[iamleot]

Thanks @mirusu400 for working on that, I think that's useful and would address an entry in the TODO (I originally thought about making it visible via possible signals but I think that's nicer!)! :)

Do you think if tqdm module can be made optional?

Also, if that's not the case, can it be disabled via, let's say -s option like curl?

What do you think?

Thanks again!

[ytuploader]

can we have a merge with this?
this would be a great update !
and please add the process bar also to the upload feature =)

[mirusu400]

Sorry for the late review, I changed some parts and add -s arguments about tqdm progress.

[barakplasma]

looks good to me, makes tqdm optional and allows the user to see progress\

closes #13 and #21