estimate: show packages in NEW, but with a light blue color

[n-peugnet]

It uses an additional query from the DAK Web API to get the packages currently in NEW, but this one returns only source packages, so we have to keep into memory the name of the source packages when we get the list of all golang packages.

Maybe the name getGolangBinaries is a bit misleading now.

Closes: #283

Here is an example output:

[n-peugnet]

Could maybe still be improved but it is good for review IMO.
CC @werdahias

[werdahias]

Thanks, looks very nice ! what's the best way to test this ?

[n-peugnet]

what's the best way to test this ?

I would say:

git clone https://github.com/n-peugnet/dh-make-golang -b color-packages-in-new
cd dh-make-golang
go run . estimate <import-path>

[werdahias]

works perfectly on my end, can we get this merged ?

[ottok]

This is a really nice addition and can help avoid a bunch of duplicate work

[n-peugnet]

To be fair, these packages were previously not shown in the estimate output. So I'm not sure it will really avoid duplicated work. But it is nice too see the ongoing work.

I still think that I should probably rename the getGolangBinaries function and related variables to something like getDebianPackages or something like this.

[ottok]

There hasn't been any objections since I approved this, so proceeding to merge it.