Go/Xorm examples with separate go package for helper functions

[fimac]

No description provided.

[fimac]

There might be a better way to do this.

I wanted to ensure that insert statements didn't need to be changed and only plaintext values were retrieved. Using the conversion interface allows us to convert from the go app type (e.g string) to the underlying db type (jsonb).

To do that, I needed to create a custom type, to then call the ToDb/FromDb method on.

The serialization/deserialization functions have been extracted to the goeql package currently sitting locally in the same folder (naming to tbc), so they can all be reused.