[Bugfix] Remove svg export

[hjoaquim]

1. Why? (1-3 sentences or a bullet point list):

   • Broken export to svg functionality.

2. What? (1-3 sentences or a bullet point list):

   • Remove svg functionality.

3. Impact (1-2 sentences or a bullet point list):

   • Minor UX: user won't be able to export to svg (that option will not be there) - but it wasn't working properly anyway.

4. Testing Done:

   • Running the CLI and exporting to other formats.

5. Reviewer Notes (optional):

   • Took the opportunity to clean up unused methods and improve linting.
   • Also added the url method to the charting extension (since the functionality existed already but was not exposed).
   • Also fixed the VERSION of the CLI, which was static.