libs: wrap mutexes for build flag with godeadlock (#5126)

## Description

This PR wraps the stdlib sync.(RW)Mutex & godeadlock.(RW)Mutex. This enables using go-deadlock via a build flag instead of using sed to replace sync with godeadlock in all files

Closes: #3242

mempool/clist_mempool.go

@@ -15,6 +15,7 @@ import (
 	"github.com/tendermint/tendermint/libs/log"
 	tmmath "github.com/tendermint/tendermint/libs/math"
 	tmos "github.com/tendermint/tendermint/libs/os"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 	"github.com/tendermint/tendermint/p2p"
 	"github.com/tendermint/tendermint/proxy"
 	"github.com/tendermint/tendermint/types"
@@ -43,7 +44,7 @@ type CListMempool struct {
 
 	// Exclusive mutex for Update method to prevent concurrent execution of
 	// CheckTx or ReapMaxBytesMaxGas(ReapMaxTxs) methods.
-	updateMtx sync.RWMutex
+	updateMtx tmsync.RWMutex
 	preCheck  PreCheckFunc
 	postCheck PostCheckFunc
 
@@ -681,7 +682,7 @@ type txCache interface {
 // mapTxCache maintains a LRU cache of transactions. This only stores the hash
 // of the tx, due to memory concerns.
 type mapTxCache struct {
-	mtx      sync.Mutex
+	mtx      tmsync.Mutex
 	size     int
 	cacheMap map[[TxKeySize]byte]*list.Element
 	list     *list.List

mempool/reactor.go

@@ -3,12 +3,12 @@ package mempool
 import (
 	"fmt"
 	"math"
-	"sync"
 	"time"
 
 	cfg "github.com/tendermint/tendermint/config"
 	"github.com/tendermint/tendermint/libs/clist"
 	"github.com/tendermint/tendermint/libs/log"
+	tmsync "github.com/tendermint/tendermint/libs/sync"
 	"github.com/tendermint/tendermint/p2p"
 	protomem "github.com/tendermint/tendermint/proto/tendermint/mempool"
 	"github.com/tendermint/tendermint/types"
@@ -39,7 +39,7 @@ type Reactor struct {
 }
 
 type mempoolIDs struct {
-	mtx       sync.RWMutex
+	mtx       tmsync.RWMutex
 	peerMap   map[p2p.ID]uint16
 	nextID    uint16              // assumes that a node will never have over 65536 active peers
 	activeIDs map[uint16]struct{} // used to check if a given peerID key is used, the value doesn't matter