Cli supports commands ignoring case

[Uncle-Justice]

uj001@uj001:~/flydb$ ./bin/flydb-client 127.0.0.1:8999

 ______ __ ____ ____ 
 / ____/ / / __ __ / __ \  / __ )
 / / / / / / / / / / / / / /_/ /
 / /_ / / / / / / / / / / / __ |
 / __/ / / / /_/ / / / / / / / / / 
 / / / / \__, / / /_/ / / /_/ / 
 /_/ /_/ ,__/ / /_____/ /_____/ 
 /____/ 

flydb $> LPush l1 1
LPush data success
flydb $> lpush l1 1
error: unknown command, try 'help'

[qishenonly]

At present, FlyDB-Cli exclusively supports uppercase commands and does not handle operations that are case-insensitive.