Added Thread naming based on remote socket address (#738) (#753)

- Added ThreadNameProvider to set name based on Thread Class and remote socket address
- Added RemoteAddressProvider to abstract access to Remote Socket Address
- Set Reader Thread name in TransportImpl
- Set SFTP PacketReader Thread name in SFTPEngine
- Set KeepAlive Thread name in SSHClient

Co-authored-by: Jeroen van Erp <jeroen@hierynomus.com>

src/main/java/net/schmizz/keepalive/Heartbeater.java

@@ -24,7 +24,7 @@ final class Heartbeater
         extends KeepAlive {
 
     Heartbeater(ConnectionImpl conn) {
-        super(conn, "heartbeater");
+        super(conn, "sshj-Heartbeater");
     }
 
     @Override