cmd/geth: add db commands stats, compact, put, get, delete (#22014)

This PR introduces:

- db.put to put a value into the database
- db.get to read a value from the database
- db.delete to delete a value from the database
- db.stats to check compaction info from the database
- db.compact to trigger a db compaction

It also moves inspectdb to db.inspect.

core/rawdb/database.go

@@ -270,8 +270,8 @@ func (s *stat) Count() string {
 
 // InspectDatabase traverses the entire database and checks the size
 // of all different categories of data.
-func InspectDatabase(db ethdb.Database) error {
-	it := db.NewIterator(nil, nil)
+func InspectDatabase(db ethdb.Database, keyPrefix, keyStart []byte) error {
+	it := db.NewIterator(keyPrefix, keyStart)
 	defer it.Release()
 
 	var (
@@ -307,8 +307,9 @@ func InspectDatabase(db ethdb.Database) error {
 		bloomTrieNodes stat
 
 		// Meta- and unaccounted data
-		metadata    stat
-		unaccounted stat
+		metadata     stat
+		unaccounted  stat
+		shutdownInfo stat
 
 		// Totals
 		total common.StorageSize
@@ -359,6 +360,8 @@ func InspectDatabase(db ethdb.Database) error {
 			bytes.HasPrefix(key, []byte("bltIndex-")) ||
 			bytes.HasPrefix(key, []byte("bltRoot-")): // Bloomtrie sub
 			bloomTrieNodes.Add(size)
+		case bytes.Equal(key, uncleanShutdownKey):
+			shutdownInfo.Add(size)
 		default:
 			var accounted bool
 			for _, meta := range [][]byte{
@@ -413,6 +416,7 @@ func InspectDatabase(db ethdb.Database) error {
 		{"Key-Value store", "Storage snapshot", storageSnaps.Size(), storageSnaps.Count()},
 		{"Key-Value store", "Clique snapshots", cliqueSnaps.Size(), cliqueSnaps.Count()},
 		{"Key-Value store", "Singleton metadata", metadata.Size(), metadata.Count()},
+		{"Key-Value store", "Shutdown metadata", shutdownInfo.Size(), shutdownInfo.Count()},
 		{"Ancient store", "Headers", ancientHeadersSize.String(), ancients.String()},
 		{"Ancient store", "Bodies", ancientBodiesSize.String(), ancients.String()},
 		{"Ancient store", "Receipt lists", ancientReceiptsSize.String(), ancients.String()},