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:

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Checklist:

• Automated checks (GitHub Actions, AppVeyor) pass
• No new new dependencies are required or l2tdevtools has been updated
• Reviewer assigned