Move the ICharacterItem.kt to an api target.

[samokryl]

resolve #47

[ntnsmirnov]

unnecessary empty.kt file in the root directory of the module :list.api

[michaem]

unnecessary empty.kt file in the root directory of the module :list.api

empty.kt is necessary for :api modules types, cause for kotlin-only compile requirements. In that case, need to have one kt file at least.

You can create issue for do some enhancement in that behaviour of :api modules and other kotlin-only.

empty.kt file could be resolved later 👍

[stepango]

@samokryl @ntnsmirnov Happy to see you here, guys! Thanks for helping us with this awesome project.