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

firmware/targets/f7/Src/main.c

@@ -1,7 +1,7 @@
 #include "main.h"
 
 #include <furi.h>
-#include <furi-hal.h>
+#include <furi_hal.h>
 #include <flipper.h>
 
 #define TAG "Main"
@@ -26,14 +26,15 @@ int main(void) {
     // Start kernel
     osKernelStart();
 
-    while (1) {}
+    while(1) {
+    }
 }
 
 void Error_Handler(void) {
     furi_crash("ErrorHandler");
 }
 
-#ifdef  USE_FULL_ASSERT
+#ifdef USE_FULL_ASSERT
 /**
     * @brief  Reports the name of the source file and the source line number
     *         where the assert_param error has occurred.
@@ -41,7 +42,7 @@ void Error_Handler(void) {
     * @param  line: assert_param error line source number
     * @retval None
     */
-void assert_failed(uint8_t *file, uint32_t line) {
+void assert_failed(uint8_t* file, uint32_t line) {
     furi_crash("HAL assert failed");
 }
 #endif /* USE_FULL_ASSERT */