[FEATURE REQUEST] Remove "work directory"

[aXu-AP]

Describe the problem you're trying to solve in your project
Tool settings add noise to version control. Setup of the addon could be easier.

Describe a feature you consider and how it will help you
Rearrange things a bit, so that there would be no need to set up working directory and one could start working right away. Tool settings, like the rest of the Godot editor settings (even project specific like opened tabs), should be saved in a way that it doesn't get added to version control. Newcomers would have even better time jumping in. It's not that this plugin requires excess amount of configuration, but stuff can always be more frictionless.

Describe alternatives you've considered
This is more of a nice to have thing - I can always discard toolshed changes and project has already been set up.

Describe how you imagine it would work. With code, pseudo-code, diagram or a drawing
There's 2 files the Gardener saves in the work directory: toolshed.tres and greenhouse.tres. Here's what to do instead:

• Toolshed
  • Includes last used brush settings
  • Can be saved in res://.godot/ folder with the rest of editor specific stuff.
• Greenhouse
  • Includes plant info like what meshes to use
  • Expose as a resource, automatically create new if doesn't exist.
  • Can be saved as a local resource with the scene. User can save the resource to a separate file for reuse if they wish.
  • This is the Godot-y way.

Correct me if I has any gaps in understanding the system. Also there might be some plans for how to use the working directory I'm not aware of.