Naming and coding style convention, new linter tool. (#945)

* Makefile, Scripts: new linter
* About: remove ID from IC
* Firmware: remove double define for DIVC/DIVR
* Scripts: check folder names too. Docker: replace syntax check with make lint.
* Reformat Sources and Migrate to new file naming convention
* Docker: symlink clang-format-12 to clang-format
* Add coding style guide

applications/desktop/scenes/desktop_scene_main.c

@@ -9,7 +9,7 @@
 #include "furi/pubsub.h"
 #include "furi/record.h"
 #include "furi/thread.h"
-#include "storage/storage-glue.h"
+#include "storage/storage_glue.h"
 #include <loader/loader.h>
 #include <m-list.h>
 #define MAIN_VIEW_DEFAULT (0UL)