The params package should not depend on config. The params packages
should be consumable by external applications that wish to interact with
garm, and it makes no sense to pull in the config package just for some
constants. As such, the following changes have been made:
* Moved some types from config to params
* Moved defaults in a new leaf package called appdefaults
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>