Refactor `issue_save_new.sh` to Ruby for better integration and maintainability

[miguelgonrod]

Currently, issue_save_new.sh is a bash script that handles database insertion for new known issues. The change made in #238 calls a repetitive function that is probably in another of the ruby codes.

Proposed solutions

• Create a ruby method and do a call from issue_save_new.sh
• Rewrite issue_save_new.sh in ruby