Tasks:

• Ask the submitter of rpc: port ADR-075 event subscription from master to main tendermint/tendermint#9857 to resubmit to Comet (if it's still private, let's do it ourselves)
• Final high-level review of rpc: port ADR-075 event subscription from master to main tendermint/tendermint#9857 (all this code has already been reviewed twice)
• Run UTs, e2e locally
• (Optional) Run a testnet to make sure no major breakage is introduced
• Merge rpc: port ADR-075 event subscription from master to main tendermint/tendermint#9857 into main
• Update documentation, such as state of ADR (if needed), update references to the backport feature branch

DoD:

• Branch feature/adr075-backport is merged
• No major breakages, any minor issue is solved
• Documentation up to date

Original Issue: tendermint/tendermint#9949