feat: sequencer rotation

[mtsitrin]

This PR refactors the sequencers management on dymint. Closes #941

• based on ADR: https://www.notion.so/dymension/ADR-x-Sequencer-Rotation-014f9f8c781543b5b99f4f2571969c3d?pvs=4
• depends on dymension version: https://github.com/dymensionxyz/dymension/pull/1006

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Main changes:

• refactored SequencerSet kept in state (custom struct instead of tendermint.ValidatorSet)
• Proposer is managed from the state, instead of SL
• blocks are validated against the expected proposer from the state
• proposer is changed according to the nextSequencerHash field in block header
• sequencer logic:
  • listen to rotation started signal from the hub
  • produce lastBlock and submit lastStateUpdate

Bug fix

• fix event handling with dymension based on cosmos v0.47.x
  • https://github.com/dymensionxyz/cosmosclient/pull/35
  • https://github.com/dymensionxyz/cometbft/pull/4

WIP:

• [x] migration checks
• [ ] get rotation mark on state update response (depends on https://github.com/dymensionxyz/dymension/issues/1025)
• [ ] more tests

will be added in separate PRs:

• https://github.com/dymensionxyz/dymint/issues/1008
• https://github.com/dymensionxyz/dymint/issues/1015

Summary by CodeRabbit

• New Features

  • Introduced a new interface, GetProposerI, to enhance proposer management.
  • Implemented comprehensive functionalities for managing sequencer rotations.
  • Added a message structure for updating rollapp states, enhancing state management.

• Bug Fixes

  • Enhanced error handling within the block application logic, preventing nil pointer dereferences.

• Improvements

  • Renamed functions for clarity and readability, reflecting their updated roles.
  • Streamlined initialization and update logic for state management, improving clarity and reducing potential errors.
  • Established a robust parameter management system for rollapps.
  • Improved block production process with enhanced error handling and flexibility.

• Tests

  • Refactored test cases for block management to align with new functionality and improve maintainability.