Add breadrumb.origin

[krystofwoldrich]

Description

Add new runtime property to SentryBreadcrumb called origin, this can be used to identify source of the breadcrumb.

For example hybrid SDKs can identify native breadcrumbs from JS or Flutter.

Required for

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1. Fix: Breadcrumbs added on forked context are now captured sentry-capacitor#629
   Blocked Status: Stale +2
2. Exception capture context is overwritten by native scope sync sentry-react-native#2146
   Platform: React-Native Type: 🪲 Bug +2
   

Related issues

• Add breadrumb.origin sentry-cocoa#4043

[krystofwoldrich]

@lucas-zimerman When you open a PR , you can link this issue.