Sync protobufs/topics with sentry-kafka-schemas

[evanh]

Currently the protobuf definitions for the taskbroker are in sentry-protos. However the kafka topic needs to be defined in sentry-kafka-schemas to be created in production, and the topic shouldn't be created with an empty schema.

Options/Ideas:

• Have the schemas defined in both places, and try to manually keep them in sync
• Move entirely to sentry-kafka-schemas. This will require work in that repo to make that efficient in processing protobuf encoded messages.
• Keep the schemas in sentry-protos, and import them into sentry-kafka-schemas. This would also require some work to create that mechanism.

[markstory]

However the kafka topic needs to be defined in sentry-kafka-schemas to be created in production, and the topic shouldn't be created with an empty schema.

Currently, sentry-kafka-schemas can reference a protobuf struct as a message encoding, and I've linked sentry-protos in so that the validation methods in sentry-kafka-schemas will use the generated protobuf bindings. Which is roughly the flow you mentioned.

Keep the schemas in sentry-protos, and import them into sentry-kafka-schemas. This would also require some work to create that mechanism.

Are there other gaps we still need to address?