cmd, core, eth: background transaction indexing (#20302)

* cmd, core, eth: init tx lookup in background

* core/rawdb: tiny log fixes to make it clearer what's happening

* core, eth: fix rebase errors

* core/rawdb: make reindexing less generic, but more optimal

* rlp: implement rlp list iterator

* core/rawdb: new implementation of tx indexing/unindex using generic tx iterator and hashing rlp-data

* core/rawdb, cmd/utils: fix review concerns

* cmd/utils: fix merge issue

* core/rawdb: add some log formatting polishes

Co-authored-by: rjl493456442 <garyrong0905@gmail.com>
Co-authored-by: Péter Szilágyi <peterke@gmail.com>

tests/block_test_util.go

@@ -124,7 +124,7 @@ func (t *BlockTest) Run(snapshotter bool) error {
 		cache.SnapshotLimit = 1
 		cache.SnapshotWait = true
 	}
-	chain, err := core.NewBlockChain(db, cache, config, engine, vm.Config{}, nil)
+	chain, err := core.NewBlockChain(db, cache, config, engine, vm.Config{}, nil, nil)
 	if err != nil {
 		return err
 	}