[FEATURE] add sockets,keysFolder

[jupster]

Is your feature request related to a problem? Please describe.

Prepare these for 2.22 ?

class sockets {
    MaxBandwidth = "12Mbps";     // Per-client cap
    initBandwidth = "2Mbps";     // Supports weaker ISPs
};

Prepare these for 2.22 ?

-keysFolder= command line parameter