[Feature request]: Bucket Tool

[CodeDoctorDE]

Is your feature request related to a problem? Please describe

Filling the exact shape you made is very annyoing if you have a small stroke width.

Describe your feature request!

Add a bucket tool that fills everything in this area

Additional context

We need to test if in this range is a pen element. After that we need to copy the path of it into the new fill element.

We don't need a new fill element, just use the PenElement with fill = true.

Code of Conduct

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[CodeDoctorDE]

This doesn't make sense anymore, since you can just use fill=true with the pen element.
See #802 for more advanced usages