Chopping - Replace ActionsManagerComponent on plant with helper

[Kexanone]

When merged this pull request will:

• Reduce memory requirement by using a dynamic spawned helper entity for providing the chopping action instead of an actions manager on all plants.
• Resolves #50

Notes on the implementation:

• The E-tool already has a dynamic handler for spawning/despawning building previews, hence we just use those methods for our helper system.