Rename Project to Package

Signed-off-by: Alejandro Mery <amery@geeks.cl>
NewServerFromFile: fix err scope

Signed-off-by: Alejandro Mery <amery@geeks.cl>
Rename Package.Repo to Package.URL

Signed-off-by: Alejandro Mery <amery@geeks.cl>
server: rework packages to include hostname

Signed-off-by: Alejandro Mery <amery@geeks.cl>