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_vcp.h

@@ -0,0 +1,63 @@
+/**
+ * @file furi_hal_vcp.h
+ * VCP HAL API
+ */
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Init VCP HAL Allocates ring buffer and initializes state
+ */
+void furi_hal_vcp_init();
+
+/** Disable VCP to make CDC interface usable by other application
+ */
+void furi_hal_vcp_disable();
+
+/** Enable VCP
+ */
+void furi_hal_vcp_enable();
+
+/** Recieve data from VCP Waits till some data arrives, never returns 0
+ *
+ * @param      buffer  pointer to buffer
+ * @param      size    buffer size
+ *
+ * @return     items copied in buffer, 0 if channel closed
+ */
+size_t furi_hal_vcp_rx(uint8_t* buffer, size_t size);
+
+/** Recieve data from VCP with timeout Waits till some data arrives during
+ * timeout
+ *
+ * @param      buffer   pointer to buffer
+ * @param      size     buffer size
+ * @param      timeout  rx timeout in ms
+ *
+ * @return     items copied in buffer, 0 if channel closed or timeout occurs
+ */
+size_t furi_hal_vcp_rx_with_timeout(uint8_t* buffer, size_t size, uint32_t timeout);
+
+/** Transmit data to VCP
+ *
+ * @param      buffer  pointer to buffer
+ * @param      size    buffer size
+ */
+void furi_hal_vcp_tx(const uint8_t* buffer, size_t size);
+
+/** Check whether VCP is connected
+ *
+ * @return     true if connected
+ */
+bool furi_hal_vcp_is_connected(void);
+
+#ifdef __cplusplus
+}
+#endif