[Idea] Extra attributes on clicks

[pedrocarmona]

Allow setting extra attributes to clicks via data html attributes.

<a href="/profiles/1" id="profile_link" data-ab-test="green_button">Profile</a>

Would send abTest: "green_button" to ahoy_events table.

https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes

[pedrocarmona]

Allows adding multiple attributes to the event via html, like:

• record id,
• relationship/parent/nested record id
• trackid (custom id of object)