Adds an example of adding an image shape from the public folder.
### Change Type
- [ ] `patch` — Bug fix
- [x] `minor` — New feature
- [ ] `major` — Breaking change
- [ ] `dependencies` — Changes to package dependencies[^1]
- [ ] `documentation` — Changes to the documentation only[^2]
- [ ] `tests` — Changes to any test code only[^2]
- [ ] `internal` — Any other changes that don't affect the published
package[^2]
- [ ] I don't know
[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version
### Release Notes
- Adds a simple image example.
Adds an example for making a custom shape with handles
### Change Type
- [x] `documentation` — Changes to the documentation only[^2]
### Release Notes
- Add an example for making a custom shape with handles, this one is a
speech bubble with a movable tail.
This PR adds a custom tool example, the `Screenshot Tool`.
It demonstrates how a user can create a custom tool together with custom
tool UI.
### Change Type
- [x] `minor` — New feature
### Test Plan
1. Use the screenshot example
### Release Notes
- adds ScreenshotTool custom tool example
- improvements and new exports related to copying and exporting images /
files
- loosens up types around icons and translations
- moving `StateNode.isActive` into an atom
- adding `Editor.path`
