feat(consensus): confirm votes on vote bit set receipt

[lklimek]

Issue being fixed or feature implemented

Nodes mark votes as delivered directly after sending them to their peers, what is not always the case.

In case of high load, some votes might not be processed successfully and dropped (due to too long queue).
In this case, node will never these votes again, what can lead to chain halt on that node due to "starvation".

What was done?

Votes are not marked as delivered directly after sending. Instead, VoteSetBits message is sent after accepting a vote, and the peer marks vote as delivered after it received VoteSetBits.

How Has This Been Tested?

Breaking Changes

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[github-actions]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.