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/nfc/nfc.c

@@ -1,5 +1,5 @@
 #include "nfc_i.h"
-#include "furi-hal-nfc.h"
+#include "furi_hal_nfc.h"
 
 bool nfc_custom_event_callback(void* context, uint32_t event) {
     furi_assert(context);

applications/nfc/nfc_cli.c

@@ -1,7 +1,7 @@
 #include "nfc_cli.h"
 #include "nfc_types.h"
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 void nfc_on_system_start() {
 #ifdef SRV_CLI

applications/nfc/nfc_i.h

@@ -6,14 +6,14 @@
 #include "nfc_device.h"
 
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 
 #include <gui/gui.h>
 #include <gui/view.h>
 #include <gui/view_dispatcher.h>
 #include <gui/scene_manager.h>
 #include <cli/cli.h>
-#include <notification/notification-messages.h>
+#include <notification/notification_messages.h>
 
 #include <gui/modules/submenu.h>
 #include <gui/modules/dialog_ex.h>

applications/nfc/nfc_worker.c

@@ -1,5 +1,5 @@
 #include "nfc_worker_i.h"
-#include <furi-hal.h>
+#include <furi_hal.h>
 #include "nfc_protocols/emv_decoder.h"
 #include "nfc_protocols/mifare_ultralight.h"