Security information

[leoyala]

Please describe your 🚀 feature request.
I think that it is a good idea to include a security file called SECURITY.md at the root of SIMPA to let people know how we handle security vulnerabilities.

Describe the solution you'd like
Include a file named sECURITY.md at the root of simpa based on this example from electron: https://github.com/electron/electron/blob/main/SECURITY.md

Describe alternatives you've considered
None.

Additional context
None.