Detect oversized events and attempt to reduce their size

[adinauer]

Problem Statement

Events can be too large due to mulitple reasons, e.g.:

• too many breadcrumbs
• large breadcrumbs
• too much / large customer context data / attributes
• large stack traces (e.g. caused by recursion)

Also see: #910

Solution Brainstorm

Look at what other SDKs do.

Ruby removes breadcrumbs and if that's not enough, reduces stack trace size.

Could also provide a callback for allowing customers to drop what they prefer.

Reducing stack trace size (#4818) could also be performed conditionally if this is implemented.

[linear]

JAVA-209