Add SQLite parser for iOS Tiktok Contacts

[annisadp]

One line description of pull request

Add SQLite parser for iOS Tiktok Contacts (AwemeIM) file

Description:

I add and modify several files:

• Add import ios_tiktok_contacts to plaso/parsers/sqlite_plugins/init.py
• Add a new parser plugin ios_tiktok_contacts.py to plaso/parsers/sqlite_plugins/
• Add AwemeIM.db file to test_data/
• Add unit test ios_tiktok_contacts.py to tests/parsers/sqlite_plugins/
• Modify ios.yaml (plaso/data/formatters/ios.yaml)
• Modify formatters timeliner.yaml (plaso/data/formatters/ios.yaml)

Related issue (if applicable): fixes #

Notes:

All contributions to Plaso undergo code review.
This makes sure that the code has appropriate test coverage and conforms to the
Plaso style guide.

One of the maintainers will examine your code, and may request changes. Check off the items below in
order, and then a maintainer will review your code.

Checklist:

• Automated checks (GitHub Actions, AppVeyor) pass
• No new new dependencies are required or l2tdevtools has been updated
• Reviewer assigned
• Test data has a Plaso compatible license

[joachimmetz]

@annisadp what is the origin of the test data file?

[joachimmetz]

Rebased PR