feat(sptool): add python SpSetupActions framework

Developed python framework to help with SPs configuration. The framework
allows for functions (dubbed "actions" in the framework) to be defined
that should process the "sp_layout.json" file.

Signed-off-by: J-Alves <joao.alves@arm.com>
Change-Id: I278cd5a7aa0574168473e28f3b0fe231d7b548ee
1 file changed