* RPC: Add App start, lock status
- Add RPC commands Application start, lock status acquiring.
- Write tests for RPC App system.
- Replace Unit Tests application with CLI command. This is for CI needs and for tests that run application.
* Fix NDEBUG build
* Update PB submodule
* Fix RPC print (ENABLE DEBUG PRINT!)
* snprintf -> string_t
* Fix Hard Fault (early mutex free)
* printf -> string_t, format, enable tests
* Update submodule: protobuf
* Applications: rollback unit test naming scheme.
Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
