NAD : rotate boundary node according to new dangling line orientation

Signed-off-by: Luma zamarrenolm@aia.es

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[X] The commit message follows our guidelines
[ ] Tests for the changes have been added (for bug fixes / features)
[ ] Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...) Feature

What is the current behavior? (You can also link to an open issue here) Boundary nodes are drawn as semi-circles. When they are moved the related dangling line changes its orientation, and the semi-circle is not drawn properly.

What is the new behavior (if this is a feature change)? When boundary nodes are moved, its drawing is rotated following the new orientation of the related dangling line.

powsybl / powsybl-dev-tools

NAD : rotate boundary node according to new dangling line orientation #70