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/furi_hal_include/furi_hal_usb.h

@@ -0,0 +1,50 @@
+#pragma once
+
+#include "usb.h"
+
+typedef struct UsbInterface UsbInterface;
+
+struct UsbInterface {
+    void (*init)(usbd_device* dev, UsbInterface* intf);
+    void (*deinit)(usbd_device* dev);
+    void (*wakeup)(usbd_device* dev);
+    void (*suspend)(usbd_device* dev);
+
+    struct usb_device_descriptor* dev_descr;
+
+    void* str_manuf_descr;
+    void* str_prod_descr;
+    void* str_serial_descr;
+
+    void* cfg_descr;
+};
+
+/** USB device interface modes */
+extern UsbInterface usb_cdc_single;
+extern UsbInterface usb_cdc_dual;
+extern UsbInterface usb_hid;
+extern UsbInterface usb_hid_u2f;
+
+/** USB device low-level initialization
+ */
+void furi_hal_usb_init();
+
+/** Set USB device configuration
+ *
+ * @param      mode new USB device mode
+ */
+void furi_hal_usb_set_config(UsbInterface* new_if);
+
+/** Get USB device configuration
+ *
+ * @return    current USB device mode
+ */
+UsbInterface* furi_hal_usb_get_config();
+
+/** Disable USB device
+ */
+void furi_hal_usb_disable();
+
+/** Enable USB device
+ */
+void furi_hal_usb_enable();