Add new apis to get node type and ttl time info

[zk: 127.0.0.1:2180(CONNECTED) 15] stat /test
cZxid = 0xfa3c001b7ce4
ctime = Tue Oct 15 14:07:03 CST 2019
mZxid = 0xfa3c001b7d32
mtime = Tue Oct 15 16:52:28 CST 2019
pZxid = 0xfa3c001b7d33
cversion = 11
dataVersion = 42
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 6
numChildren = 11