Tag datetime fix

[maxwellflitton]

What is the motivation?

Adding support for isoformat dates with DatetimeWrapper and IsoDateTimeWrapper classes.

Type of Change

• 📚 Examples / docs / tutorials / dependencies update
• 🔧 Bug fix (non-breaking change which fixes an issue)
• 🥂 Improvement (non-breaking change which improves an existing feature)
• 🚀 New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to change)
• 🔐 Security fix

What does this change do?

Provides serialisation for datetimes for cbor

What is your testing strategy?

unit tests written in the tests/unit_tests/data_types/test_datetimes.py file. Here we have a wrapper that handles the serialization of datetime. I've tried to overwrite the default serialization but this was no possible so I had to use wrapper classes.

Is this related to any issues?

#144

Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines