Save Service Map as SVG

**Is your feature request related to a problem? Please describe.**
No

**Describe the solution you'd like**
Being able to save and download any Service Map to (at least) SVG

**Describe alternatives you've considered**
None

**Additional context**
Sometimes you need to edit big service maps to make them comprehensible or you want to archive it for documentation, presentations, etc. without the need to calculate or edit them each time you need it.