refactor: separate logic of aggregator with non aggregator

[mtsitrin]

from the issue (#552):

current issues in the implementation:

• multiple redundant events in case of batch submission
  -- HubClient gets events from SL and sends NewSettlementBatchAccepted
  -- stateUpdatesHandler() gets this event and sends additional event EventNewBatchAccepted
• too complex flow for an aggregator to be synced with correct state height
  -- sequencer sends a batch, but reiles on the internal events to update the syncTarget
  -- aggregator can set the synctarget on it's own after successful SL submit

design changes:

• aggregator runs produce and submit
• non-aggregator runs sync and retreive
• submit loop sets the syncTarget after successful submission (saving 2 internal events)
• single event type for SL batch acceptance

Code was tested as sequencer, sycning sequencer, and a full node

[omritoptix]

tests failed on race condition

[codecov]

Codecov Report

Attention: 110 lines in your changes are missing coverage. Please review.

❗ No coverage uploaded for pull request base (main@996e681). Click here to learn what that means.

Files	Patch %	Lines
rpc/client/client.go	30.00%	33 Missing and 2 partials ⚠️
mocks/settlement/hubclient.go	5.71%	29 Missing and 4 partials ⚠️
block/submit.go	51.61%	11 Missing and 4 partials ⚠️
settlement/grpc/grpc.go	0.00%	9 Missing ⚠️
block/manager.go	80.00%	6 Missing and 2 partials ⚠️
block/synctarget.go	14.28%	6 Missing ⚠️
settlement/dymension/dymension.go	55.55%	4 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #558   +/-   ##
=======================================
  Coverage        ?   45.99%           
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  Files           ?      101           
  Lines           ?    15150           
  Branches        ?        0           
=======================================
  Hits            ?     6968           
  Misses          ?     7211           
  Partials        ?      971           

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[omritoptix]

beautiful job 💯

[omritoptix]

linters fail

The base branch was changed.