feat(rotation): graceful role rotation

[mtsitrin]

graceful role rotation (node->sequencer, sequencer->node)

• UpdateProposerFromBlock for a node->proposer
• handleRotationReq for a propsoer->node

also should handle halted -> non halted change for both node and sequencer

[mtsitrin]

I though about the following: sets of workers:

• sync - syncing workers (p2p, da, etc..)
• produce - produce + submit workers

Than:

• full nodes will run sync workers
• every bonded sequncer will run - produce + sync
  • if the node is the the proposer: produce enabled, sync disabled
  • if it just bonded sequencer: produce disabled, sync enabled

bonded sequencer will monitor role rotation, which will toggle the enable/disable of the workers set

changing from node to bonded sequencer will require reboot (which I think it's fine. especially for now)

[danwt]

Could you clarify what is meant by UpdateProposerFromBlock?

[danwt]

As I understand the purpose of this issue is to remove panic and reboots?