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/animations/animation_manager.c

@@ -1,5 +1,5 @@
 #include "animation_manager.h"
-#include "furi-hal-delay.h"
+#include "furi_hal_delay.h"
 #include "portmacro.h"
 #include "views/bubble_animation_view.h"
 #include "animation_storage.h"
@@ -14,7 +14,7 @@
 #include <stdint.h>
 #include <storage/storage.h>
 #include <dolphin/dolphin_i.h>
-#include <storage/filesystem-api-defines.h>
+#include <storage/filesystem_api_defines.h>
 
 #define TAG "AnimationManager"