Most replayed Heatmap (Logging)

[mono424]

Splitted the heatmap implementation into two parts:

• Logging algorithm to track where people seek to
• Visuals to display the heatmap

This Pullrequest only contains the logging logic.

[MatthiasReumann]

I am not sure if this PR is reviewable yet. However, I was super interested in how you implemented it, so, if it isn't opened officially let's call this early feedback. 😅

Nevertheless, looks pretty cool 💯

[mono424]

@MatthiasReumann Thank you for your feedback!

@MatthiasReumann @joschahenningsen Lets discuss if its probably better to use progressReport to increment section counters for the video :).

[mono424]

I am not sure if this PR is reviewable yet. However, I was super interested in how you implemented it, so, if it isn't opened officially let's call this early feedback. 😅

Nevertheless, looks pretty cool 💯

Thanks for your feedback! The testutils you have written are pretty sick!! 🚀

[MatthiasReumann]

Looks great 💯

If this isn't merged before #549 you can even use the **new and improved** testutils. Then testutils.First(...) and json.Marshal(...) are not necessary anymore and you can specify the body as

{
    ...
    Body: gin.H{"position": testPosition}
    ...
}

I've left a comment regarding security concerns. But we might want to discuss that in a meeting.