Tag whether event was created in the UI thread

[SimonCropp]

fixes #62

[lucas-zimerman]

PR looks ok for me.

@bruno-garcia , do you know if it's possible to add the main thread info next to the mechanism? picture for reference

So we could have a new item called [main_thread] or [main thread] and set True/False.

Event for reference: https://sentry.io/organizations/sentry-sdks/issues/2866761831/?project=5428557&query=&statsPeriod=90d

[SimonCropp]

are the broken builds expected?

[bitsandfoxes]

are the broken builds expected?

No, not really. Main is breaking too without apparent changes.

[bruno-garcia]

PR looks ok for me.

@bruno-garcia , do you know if it's possible to add the main thread info next to the mechanism? picture for reference

So we could have a new item called [main_thread] or [main thread] and set True/False.

Event for reference: https://sentry.io/organizations/sentry-sdks/issues/2866761831/?project=5428557&query=&statsPeriod=90d

Yeah this is something that makes sense to align across all sdks. @philipphofmann I believe had a DACI about this. Or possibly @marandaneto who is away until beginning of January in vacation. Let's figure this out before we release this.