Fixes#6317
The `drop` method is available in the WASM object. This can be tested by typing `ensoglApp.wasm.drop()` in the dev console - all objects should be removed and all connections closed.
# Important Notes
* This PR fixed serveral leaks by this occasion
* A new tool for tracking leaks was added to prelude's `debug` module.
[Task link](https://www.pivotaltracker.com/story/show/184012434)
This PR implements Intermediate Representation for our documentation. Later these data structures would be used to generate HTML and CSS for the documentation panel. For now, we display it in the debug scene.
https://user-images.githubusercontent.com/6566674/210674850-480a3e6e-76c3-4f34-a235-15c44dc9ec01.mp4
# Important Notes
- `suggestion-database` now lives in a separate crate
- also, two utility crates were introduced for the `notification` and `executor` modules of enso-gui
- documentation debug scene is moved to a separate crate
- All refactorings are done in the last two commits
