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

bootloader/targets/furi_hal_include/furi_hal.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <furi_hal_i2c.h>
+#include <furi_hal_light.h>
+#include <furi_hal_resources.h>
+#include <furi_hal_spi.h>
+#include <furi_hal_version.h>
+
+#define furi_assert(value) (void)(value)
+
+void furi_hal_init();
+
+void delay(float milliseconds);
+
+void delay_us(float microseconds);