Edit dampers and psds

[vitorslongo]

This PR adds the requested functionality to edit and copy dampers in the project.
Also, the changes were also applied to PSDs because the workflow is basically the same.

Closes: #376

[vitorslongo]

Both the Copy and Edit methods have a problem where they end up removing the damper label from the damper lines properties in the line_properties file (or something along those lines).
You can see this by selecting a damper, clicking “Edit” or “Copy”, then closing the window.
When you reopen the damper editor and check the Lines column, the list is empty for the damper you selected.

I’ve tried several possible solutions, but none of them worked. Since you’ve worked with this file-writing logic before, could you give me a hand here, @JacsonGilVargas?

[vitorslongo]

Both the Copy and Edit methods have a problem where they end up removing the damper label from the damper lines properties in the line_properties file (or something along those lines). You can see this by selecting a damper, clicking “Edit” or “Copy”, then closing the window. When you reopen the damper editor and check the Lines column, the list is empty for the damper you selected.

I’ve tried several possible solutions, but none of them worked. Since you’ve worked with this file-writing logic before, could you give me a hand here, @JacsonGilVargas?

This bug was solved in #0b1ff2c. Basically, the damper info was not being written in the export file, a critical problem way beyond the copy and edit methods.

It is solved now, therefore, @JacsonGilVargas, you can conduct the tests normally now and see if you approve the copy and edit methods. If everything is ok I'll go ahead and make the same changes to the PSD editor.

[vitorslongo]

All the changes planned for this PR are implemented. It is now complete and ready for review and subsequent merging.

[JacsonGilVargas]

It seems like everything is working perfectly. Excellent features and code improvements, @vitorslongo.