Add follow symlink in BundlerIO to help using scalakit as a git submodule

[dacr]

This option allow anyone to create their own git repot with all their codingame solutions and use codingame scala kit as a git submodule. Just have to add some links and everything is working fine allowing both to easily share scala kit changes or enhancements and to manage our private solutions for codingame in a distinct repository.

[huiwang]

hi @dacr, it sounds like a very good idea. Do you have an example to demo this feature? In the past, I tried to create a sbt plugin to bundle files but never had enough to do that.

[dacr]

Hi @huiwang, this is done, I've added a full example (https://github.com/dacr/codingame-with-scalakit-example) with all instructions.

[huiwang]

@dacr it's a really good idea, things are better separated, thx a lot!