Document the new smart contract voting mechanism

[SimonRastikian]

Background

With @netrome and @kevindeforth we discussed the next-gen voting strategy for voting on the smart contract including the voter's API, smart contract storage and smart contract logic.

This needs to be documented with a vision over the next potential PRs

User Story

No response

Acceptance Criteria

• Compress the knowledge collected in https://app.slack.com/client/T06KNCTQFU3/C07UW93JVQ8 into a doc.
• Describe the implementation strategy for the next PRs togo

Resources & Additional Notes

No response