Create `extra` property in standard context
Part of the Snowplow standardization effort involves reducing the number of custom iglu schemas being used. These custom schemas are typically used when we want to send additional data along with an event.
As an alternative to creating/sending a custom context, we can add an extra
field to gitlab_standard
. This field will be an object where we can add any key-value pairs that are specific to an event.
Edited by Alishan Ladhani