Etherlink/Kernel: add an optional chain_id field to blueprint chunks
What
This MR adds an optional chain_id field to blueprint chunks. This field is currently ignored.
Why
In the context of the multi-chain feature, this field will be needed to let observer EVM nodes to subscribe to only the chunks corresponding to one of the chains.
How
Manually testing the MR
Checklist
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Document the interface of any function added or modified (see the coding guidelines) -
Document any change to the user interface, including configuration parameters (see node configuration) -
Provide automatic testing (see the testing guide). -
For new features and bug fixes, add an item in the appropriate changelog ( docs/protocols/alpha.rstfor the protocol and the environment,CHANGES.rstat the root of the repository for everything else). -
Select suitable reviewers using the Reviewersfield below. -
Select as Assigneethe next person who should take action on that MR