Plugins should not need to install core separately

[pabelnl]

One of the requirements if you install a plugin, let's say Aion, the core functionalities and classes from Core are not available, the developer needs to add Core besides adding Aion in the dependencies.

The objective is to only install the plugin.

implementation 'network.pocket.android:aion:0.0.2'
implementation 'network.pocket.android:core:0.0.2'