8marz8

Initial changes for including rewardSet in new block event

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### Description This PR includes RewardSet data in new_block events instead of broadcasting a separate event. Note: This Draft PR is not completed and only has the initial tweaks to...

Update StackStxOp to include signer key

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### Description Following the signer-key authorization in #4377, this PR updates stack-stx burn op (StackStxOp) to include signer-key. ### Applicable issues - closes #4285

Drop User Burn Support

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### Description Removing UserBurnSupportOp definition and usage throughout the codebase as it's not fully implemented and used. ### Applicable issues - closes #4071

Signers include coordinator metadata in messages and define NACK policy

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### Description Enhancements are being made to signer messages by including coordinator metadata that reflects each signer's view of the stacks chain. This allows signers to compare the received metadata...

related to #4701