kafka topic migration

[Theodus]

This issue tracks the effort to migrate the kafka messages exported by the gateway. The goals are to reduce the message production cost for the gateway, and to shift much of the backward compatibility concerns onto titorelli.

• Add titorelli support for consuming a new topic from the gateway, and optionally exporting the legacy gateway_client_query_results & gateway_indexer_attempts topics.
  • The new topic would be a single protobuf message, per client query, containing the necessary data points to reconstruct the legacy topics. It should also fulfill the needs of QoS Oracle V2.
• Replace the gateway reports to produce the new topic.
• Update tap-escrow-manager to use gateway_queries as realtime topic
• Remove titorelli support for the old gateway_indexer_fees topic.
• Update titorelli to produce aggregations for QoS Oracle V2
• Update titorelli aggregations to support billing improvements