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/f6/furi_hal/furi_hal_console.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void furi_hal_console_init();
+
+void furi_hal_console_enable();
+
+void furi_hal_console_disable();
+
+void furi_hal_console_tx(const uint8_t* buffer, size_t buffer_size);
+
+void furi_hal_console_tx_with_new_line(const uint8_t* buffer, size_t buffer_size);
+
+/**
+ * Printf-like plain uart interface
+ * @warning Will not work in ISR context
+ * @param format 
+ * @param ... 
+ */
+void furi_hal_console_printf(const char format[], ...);
+
+void furi_hal_console_puts(const char* data);
+
+#ifdef __cplusplus
+}
+#endif