Created a fork for a structural variant view and other additions

[JasperGeelen]

Hello,

I am a Master's student at Eindhoven University of Technology and the topic of my thesis is to improve the STM tool to better facilitate the exploration of pangenomes. To that end, I implemented a view that focuses on showing SV's (mostly insertions and deletions as of now) to improve horizontal scalability. The inaccuracies that are introduced by removing nodes are shown to the user by way of red "error" bars. Some other improvements regarding selecting nodes and merging tubes for vertical scalability are also in progress.

My intention was to add to the current state of the tool instead of changing is, that is why I created a fork. However, if another course of action is preferred, please let me know. Otherwise I will keep developing on that fork.

With kind regards,
Jasper