AMiRo-OS

Major SSSP overhaul:
- SSSP no works even without Bootloader (AMiRo-OS implements startup and shutdown phases)
- MSI and calendar synchronization are currently not available (WIP)
- lots of minor changes

Massive overhaul:
- updated to a new version of AMiRo-LLD
- tests (formerly unit tests) are now split onto multiple parts:
- there are "global" tests for each driver etc.
- there is an individual part for each module, e.g. if there are multiple instances of the same periphery...