refactor: Remove "Refactor" project

[Jklawreszuk]

PR Details

PR removes unnecessary project containing only redundant wrapper around NotImplementedException class.
Description states that it " can be easily tracked by finding usages", but the same goal can be easily achieved by using a global search in any IDE ... (CTRL + SHIFT + F)

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My change requires a change to the documentation.
• I have added tests to cover my changes.
• All new and existing tests passed.
• I have built and run the editor to try this change out.

[Kryptos-FR]

I think the original idea was to be able to find these specific not implemented features, as opposed to getting every other not implemented cases.

However, since it's an old TODO, I think it's fair to remove them. I didn't check by maybe the error message can be put into a constant (it looks like it's the same in most places) so that we can easily find again those same places.

[Jklawreszuk]

Thanks for explanation, it might be worthwhile to make a compilation of features to be implemented as a github issue 🤔