Reject back-to-back duplicate errors/messages

[MeredithAnya]

I'm not sure if this possible to add, but if so, it seems reasonable to attempt to reject back-to-back errors that are the same and caused by the same user. Similar to what the JavaScript SDK has here: getsentry/sentry-javascript#861

[Jean85]

As discussed on Slack, I think we should target this feature to the 2.x branch.
I think that this is feasible, but I didn't delve into the code to prove it.

@stayallive @ste93cry what do you think?

[Spriz]

It seems like this was already a feature on the 1.x release? Was this removed intentionally?

[ste93cry]

I'm not aware of any feature like this on 1.x and this has never been implemented in 2.x, at least for now

[github-actions]

This issue has gone three weeks without activity. In another week, I will close it.

But! If you comment or otherwise update it, I will reset the clock, and if you label it Status: Backlog or Status: In Progress, I will leave it alone ... forever!

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"A weed is but an unloved flower." ― Ella Wheeler Wilcox 🥀