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

core/core.mk

@@ -4,5 +4,5 @@ CFLAGS			+= -I$(CORE_DIR) -D_GNU_SOURCE
 ASM_SOURCES		+= $(wildcard $(CORE_DIR)/*.s)
 C_SOURCES		+= $(wildcard $(CORE_DIR)/*.c)
 C_SOURCES		+= $(wildcard $(CORE_DIR)/furi/*.c)
-C_SOURCES		+= $(wildcard $(CORE_DIR)/furi-hal/*.c)
+C_SOURCES		+= $(wildcard $(CORE_DIR)/furi_hal/*.c)
 CPP_SOURCES		+= $(wildcard $(CORE_DIR)/*.cpp)

core/flipper.c

@@ -1,7 +1,7 @@
 #include "flipper.h"
 #include <applications.h>
 #include <furi.h>
-#include <furi-hal-version.h>
+#include <furi_hal_version.h>
 
 #define TAG "Flipper"
 

core/furi.h

@@ -17,8 +17,8 @@
 #include <furi/valuemutex.h>
 #include <furi/log.h>
 
-#include <furi-hal-gpio.h>
-#include <furi-hal/api-interrupt-mgr.h>
+#include <furi_hal_gpio.h>
+#include <furi_hal/api_interrupt_mgr.h>
 
 #include <stdlib.h>
 

core/furi/check.c

@@ -1,7 +1,7 @@
 #include "check.h"
-#include "furi-hal-task.h"
-#include <furi-hal-console.h>
-#include <furi-hal-rtc.h>
+#include "furi_hal_task.h"
+#include <furi_hal_console.h>
+#include <furi_hal_rtc.h>
 #include <stdio.h>
 
 __attribute__((always_inline)) inline static void __furi_print_name() {

core/furi/log.c

@@ -1,7 +1,7 @@
 #include "log.h"
 #include "check.h"
 #include <cmsis_os2.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 #define FURI_LOG_LEVEL_DEFAULT FuriLogLevelInfo
 

core/furi/stdglue.c

@@ -5,7 +5,7 @@
 #include <FreeRTOS.h>
 #include <task.h>
 
-#include <furi-hal.h>
+#include <furi_hal.h>
 #include <m-dict.h>
 
 DICT_DEF2(

core/furi_hal/api_interrupt_mgr.c

@@ -1,4 +1,4 @@
-#include "api-interrupt-mgr.h"
+#include "api_interrupt_mgr.h"
 #include <cmsis_os2.h>
 #include <furi.h>
 

core/furi_hal/api_interrupt_mgr.h

@@ -1,5 +1,5 @@
 /**
- * @file api-interrupt-mgr.h
+ * @file api_interrupt_mgr.h
  * Furi: interrupt API
  */