refactor(config): Group the global and local settings into a sub-command

[aelesbao]

Description

The config command can set local and global settings. However, those are in the top level of the config sub-command. Another sub-command should instead scope those settings with a get/set syntax. On top of that, the commands config chains use and chain-id have the same functionality.

The settings to be grouped are:

• chain-id
• contracts-path
• default-account
• keyring-backend
• keyring-path

Technical Details

TBD