Make all processes communicate with each other to avoid data getting corrupted.

[vaibhavchellani]

Current we have a sycner, aggregator and a main process that work with the DB directly when finalizing a deposit we need to stop processing batches, for that need we need a common communication stream between them.

[vaibhavchellani]

We essentially just need to pass a context between syncer and aggregator, then when deposit is being processed we can pass a signal to aggregator to pause aggregation till deposit is done.