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_bt_hid.h

@@ -0,0 +1,63 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+
+enum FuriHalBtHidMediKeys {
+    FuriHalBtHidMediaScanNext,
+    FuriHalBtHidMediaScanPrevious,
+    FuriHalBtHidMediaStop,
+    FuriHalBtHidMediaEject,
+    FuriHalBtHidMediaPlayPause,
+    FuriHalBtHidMediaMute,
+    FuriHalBtHidMediaVolumeUp,
+    FuriHalBtHidMediaVolumeDown,
+};
+
+/** Start Hid Keyboard Profile
+ */
+void furi_hal_bt_hid_start();
+
+/** Stop Hid Keyboard Profile
+ */
+void furi_hal_bt_hid_stop();
+
+/** Press keyboard button
+ *
+ * @param button    button code from HID specification
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_kb_press(uint16_t button);
+
+/** Release keyboard button
+ *
+ * @param button    button code from HID specification
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_kb_release(uint16_t button);
+
+/** Release all keyboard buttons
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_kb_release_all();
+
+/** Release all media buttons
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_media_press(uint8_t button);
+
+/** Release all media buttons
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_media_release(uint8_t button);
+
+/** Release all media buttons
+ *
+ * @return          true on success
+ */
+bool furi_hal_bt_hid_media_release_all();