Drop events by error name (Inbound Filters)

[RobinHoutevelts]

Summary

Sentry has a feature called Inbound Filters where you can drop incoming events when the error message matches with a set of patterns you can define. You can provide multiple patterns, one per line. The filter applies if any of the patterns match.

The Inbound Filters feature is paid-only and requires a Sentry business account.
We'd like to replicate that feature to wmsentry to drop events before even sending them, based on the error message.

Currently there is the excluded_exceptions and excluded_tags config option.
We'd like to propose an additional excluded_error_messages.

Basic example

excluded_error_messages:
  - 'The icon * is not available*'
  - 'Email not sent for *'