move the Code Connect mapping files to the Salt repo

- This is an old code connect PR in Salt repo that needs updating: https://github.com/jpmorganchase/salt-ds/pull/4320
- Our latest mappings files are present in AI for Design team's repo: https://github.com/JPMC-CIB-MARKETS/salt-figma-code-connect/blob/feature/XSCALE-4359-figma-code-connect/README.md