cmd, core, eth: journal local transactions to disk (#14784)

* core: reduce txpool event loop goroutines and sync structs

* cmd, core, eth: journal local transactions to disk

* core: journal replacement pending transactions too

* core: separate transaction journal from pool

cmd/geth/usage.go

@@ -96,6 +96,8 @@ var AppHelpFlagGroups = []flagGroup{
 		Name: "TRANSACTION POOL",
 		Flags: []cli.Flag{
 			utils.TxPoolNoLocalsFlag,
+			utils.TxPoolJournalFlag,
+			utils.TxPoolRejournalFlag,
 			utils.TxPoolPriceLimitFlag,
 			utils.TxPoolPriceBumpFlag,
 			utils.TxPoolAccountSlotsFlag,