Implement threat modeling functionality for xDECAF Webeditor (Bachelor's Thesis)

[Benny3009]

Implements a guided labeling process inspired by LINDDUN Go in xDECAF frontend for my bachelor's thesis.

Features:

• Import threat modeling (json) file that contains extended labels and constraints
• Export analysed constraint violations as .csv
• Adds guided labeling process (button is located in the label editor) with mutually exclusive labels, additional information and color highlighting