Escape 'complex characters' characters in SurrealThing Key

[Du-z]

This fixes keys such as Guids failing

As per documentation
https://surrealdb.com/docs/surrealql#:~:text=Alternatively%20complex%20characters%20within%20record%20IDs%20can%20be%20surrounded%20by%20the%20%E2%9F%A8%20and%20%E2%9F%A9%20characters

[ProphetLamb]

Awesome! The logic looks sound. Thought I am going to move the escaping to the JsonConverter for the struct, because C# doesnt need escaping, it is required by SurrealDB.
It might confuse a user to have their content changed when creating this struct, that is intended as a string wrapper with extra info. Not to mention, we can reformat lazily in the serializer, and have much less overhead that way

[Du-z]

yeah, no problem. sounds like a plan.