Establish patterns for command-specific configuration. #149
Description
We should support configuration settings for each command. Currently we support a single option at "Peer.WatchIntervalSeconds" to specify the refresh interval when peer show -w is run. We should come up with a convention for command-specific configuration going forward; maybe using the command name as a prefix (1), or making sections under "Peer" for each command, or something else. We should also consider automatic generation of a complete configuration file and patterns for configuration error detection/reporting.
(1) Currently there is no watch command but it is planned