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

applications/ibutton/helpers/key_emulator.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "pulse_sequencer.h"
+#include "../ibutton_key.h"
+#include <one_wire_slave.h>
+#include <one_wire_device_ds_1990.h>
+#include <atomic>
+
+class KeyEmulator {
+public:
+    KeyEmulator(OneWireSlave* onewire_slave);
+    ~KeyEmulator();
+
+    void start(iButtonKey* key);
+    bool emulated();
+    void stop();
+
+private:
+    DS1990 dallas_key;
+    OneWireSlave* onewire_slave;
+
+    PulseSequencer pulser;
+    uint32_t pulse_data[72];
+
+    std::atomic<bool> anything_emulated;
+
+    void start_cyfral_emulate(iButtonKey* key);
+    void start_metakom_emulate(iButtonKey* key);
+    void start_dallas_emulate(iButtonKey* key);
+
+    void set_pulse_data_cyfral(uint8_t index, const uint32_t* data);
+    void set_pulse_data_metakom(uint8_t index, const uint32_t* data);
+
+    void result_callback(bool success, void* ctx);
+};