Added API macros LOG_RESET and SET_BUTEO_LOGGER to enable apps logging

Buteo installs its own logger because of which plugins or UI apps using
Buteo framework might not be able control their own logging. Now added
two methods in LogMacros.h LOG_RESET (to remove the install Buteo
logger) and SET_BUTEO_LOGGER(to set the Buteo logging again)

Signed-off-by: Sateesh Kavuri <sateesh.kavuri@gmail.com>