Sync PrepareProposal with Spec. Main part (#9158)

* ----start----

* [PARTIAL cherry-pick] ABCI Vote Extension 2 (#6885)

* Cherry-picked #6567: state/types: refactor makeBlock, makeBlocks and makeTxs (#6567)

* [Cherrypicked] types: remove panic from block methods (#7501)

* [cherrypicked] abci++: synchronize PrepareProposal with the newest version of the spec (#8094)

This change implements the logic for the PrepareProposal ABCI++ method call. The main logic for creating and issuing the PrepareProposal request lives in execution.go and is tested in a set of new tests in execution_test.go. This change also updates the mempool mock to use a mockery generated version and removes much of the plumbing for the no longer used ABCIResponses.

* make proto-gen

* Backported EvidenceList's method ToABCI from #7961

* make build

* Fix mockery for Mempool

* mockery

* Backported abci Application mocks from #7961

* mockery2

* Fixed new PrepareProposal test cases in state/execution_test.go

* Fixed returned errors in consensus/state.go

* lint

* Addressed @cmwaters' comment

Co-authored-by: mconcat <monoidconcat@gmail.com>
Co-authored-by: JayT106 <JayT106@users.noreply.github.com>
Co-authored-by: Sam Kleinman <garen@tychoish.com>
Co-authored-by: William Banfield <4561443+williambanfield@users.noreply.github.com>

proxy/mocks/app_conn_consensus.go

@@ -4,7 +4,6 @@ package mocks
 
 import (
 	mock "github.com/stretchr/testify/mock"
-
 	abcicli "github.com/tendermint/tendermint/abci/client"
 
 	types "github.com/tendermint/tendermint/abci/types"

proxy/mocks/app_conn_mempool.go

@@ -4,7 +4,6 @@ package mocks
 
 import (
 	mock "github.com/stretchr/testify/mock"
-
 	abcicli "github.com/tendermint/tendermint/abci/client"
 
 	types "github.com/tendermint/tendermint/abci/types"