feat: include packages from other vpm repository

[anatawa12]

Closes #21

[Spokeek]

I have a thought about this, as we base ourselves on package ids, those can have some vpm dependencies.

Do we want to track and automatically add those dependencies as well ?

[Spokeek]

Also, after taking time to try, it works great, but i would add some debug logs to follow what we have for other packages.

As an example, when fetching a package from github, we receive the next two logs

  17:30:14 [INF] Looking at https://github.com/Spokeek/goloco/releases/download/1.7.91/gogoloco-1.7.91.zip
  17:30:14 [INF] Found gogoloco (gogoloco) 1.7.91, adding to listing.

As we already have the 17:30:29 [INF] Downloading from vpm repository at the begining, maybe add logs to confirm when we actually add the manifests.

For the rest, it's all good to me.

[anatawa12]

Do we want to track and automatically add those dependencies as well ?

I think no. I think it's good to have some check and exclusion (or error) for missing dependencies in the repository but I don't think including packages non explicitly is not good.

maybe add logs to confirm when we actually add the manifests.

I think it's good. I'll add that.

[Spokeek]

All right, after all my digging and checked on my own repo, this seem to work as expected, it's all good for me (if that mattered, hehe).

Great job.