Provide a processor to support stack_info #87
Description
The standard library supports passing stack_info as a kwarg to log lines which aren't exceptions but you still want a stack trace, which can be useful for logging usages of a function. (The docs are part of Logger.debug's docs)
structlog also supports this through its StackInfoRenderer, however that renders to a string which then doesn't work well in Sentry.
It would be great if this library contained a similar processor which emitted the data in the format which Sentry expects.
sentry_sdk.utlis.current_stacktrace looks like it might be useful for this, though I'm not sure how you'd get the data into the right place on the event object to ensure it shows up as a full stack (rather than as data) in the UI.
Broadly what I'm trying to achieve here is like Sentry's attach_stacktrace client option, but available on a per-log basis rather than a setting on the client as a whole.