Add iOS bundle IDs (issue #117)

[DonnchaC]

Initial PR to add iOS bundle IDs

• [x] Include these records in the generated STIX2 files
• [x] Test that bundle IDs are checked by MVT
• [ ] Add additional known bundles for watchware and stalkerware apps.

[Te-k]

That's awesome! I think it would be great to push these changes in the research branch that also includes the script that generates the different files (including STIX files)