Rickard Bolin authored Apr 25, 2022 and Tim Hall committed May 18, 2022

Add directory structure to support third party config files. Config
files should now be placed in an appropriately named directory under
the config_files directory, but can also be accessed by providing its
absolute path to vela --config.

Signed-off-by: Rickard Bolin <rickard.bolin@arm.com>
Change-Id: I2fcf52e7b2ddd2c4491dc370c85c0b3937d18062