InitConfig initializes the config for commands to reference.

DefaultCfgName is the default config filename.

DefaultCfgNameShort is the default config filename with yml extension.

AvashRPC is the RPCService handler for the avash service.

Config is a global instance of the shell configuration.

Configuration is a shell-usable wrapper of the config file.

RPCService is for maintaining a reference to the root JSON RPC server and the HTTP router.