Package dependency by owner

[ivankravets]

Implement an option to declare library/platform/tool dependencies by a specific owner using the next format:

owner/PKGNAME @ SemVerSpec

For example, platformio.ini

[env:myenv]
platform = platformio/nordicnrf52 @ ^4.4.0
board = ...
lib_deps = 
  owner/libname
  owner2/libname2 @ >2.0,!=2.3.4

CLI

pio lib -g install "owner/lib"

[cr1st1p]

Just a note to think about it (also related to #1138): ArduinoJWT library is present twice in the repository.
Same author, different version numbering though.
I tried to load it by name and version. (ArduinoJWT@~02)
Program picked the wrong library and then tried to search for the version - which it failed to find.

[ivankravets]

Sorry for the delay. We will back to this issue soon. We need new data in registry ("owner" info)

[ivankravets]

Resolved in 893ca1b