qmpfw: Quick Mesh Project legacy firmware generator (deprecated)

Adds a new way to generate/store the configuration files for each target:
There are profiles (such as ath-qmp-small-node) which are shared between all similar kind of devices (i.e ubiquiti devices)
And individual configurations (optional) which can be used to specify extra options for the device

Add new config file for target wdr4300. Rebuild wdr3600 configuration

Adapted some configs to the new openwrt AA

targets.mk and config files adapted to the new version of qMp based on Openwrt attitude adjustment