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/debug_tools/blink_test.c

@@ -1,10 +1,10 @@
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 #include <gui/gui.h>
 #include <input/input.h>
 
-#include <notification/notification-messages.h>
+#include <notification/notification_messages.h>
 
 #define BLINK_COLOR_COUNT 7
 

applications/debug_tools/display_test/display_test.c

@@ -1,6 +1,6 @@
 #include "display_test.h"
 
-#include <furi-hal.h>
+#include <furi_hal.h>
 #include <furi.h>
 
 // Need access to u8g2
@@ -10,7 +10,7 @@
 
 #include <gui/view_dispatcher.h>
 #include <gui/modules/submenu.h>
-#include <gui/modules/variable-item-list.h>
+#include <gui/modules/variable_item_list.h>
 
 #include "view_display_test.h"
 

applications/debug_tools/uart_echo.c

@@ -2,11 +2,11 @@
 #include <m-string.h>
 #include <gui/gui.h>
 #include <notification/notification.h>
-#include <notification/notification-messages.h>
+#include <notification/notification_messages.h>
 #include <gui/elements.h>
 #include <stream_buffer.h>
-#include <furi-hal-uart.h>
-#include <furi-hal-console.h>
+#include <furi_hal_uart.h>
+#include <furi_hal_console.h>
 #include <gui/view_dispatcher.h>
 #include <gui/modules/dialog_ex.h>
 

applications/debug_tools/usb_mouse.c

@@ -1,5 +1,5 @@
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 #include <gui/gui.h>
 #include <input/input.h>
 

applications/debug_tools/usb_test.c

@@ -1,5 +1,5 @@
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 #include <gui/view.h>
 #include <gui/view_dispatcher.h>

applications/debug_tools/vibro_test.c

@@ -1,9 +1,9 @@
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 #include <gui/gui.h>
 #include <input/input.h>
-#include <notification/notification-messages.h>
+#include <notification/notification_messages.h>
 
 void vibro_test_draw_callback(Canvas* canvas, void* ctx) {
     canvas_clear(canvas);