Ability to log `TraitsData` (incl. properties), access modes, entity references

[SamCrooksFoundry]

Acceptance Criteria

• All manager API can be printed as a string in C++ and Python - and you can read what the traits data contains
• Create a test that prints each of the data types
• Should work with fmt, to_string and stream operators
• Python should work with str and repr

For our purposes, repr returns the same as str