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_reader.h

@@ -0,0 +1,54 @@
+#pragma once
+#include <stdint.h>
+#include <furi.h>
+#include "cyfral_decoder.h"
+#pragma once
+#include "metakom_decoder.h"
+#include "../ibutton_key.h"
+#include <one_wire_master.h>
+#include <one_wire_slave.h>
+
+class KeyReader {
+public:
+    enum class Error : uint8_t {
+        EMPTY,
+        CRC_ERROR,
+        NOT_ARE_KEY,
+        OK,
+    };
+
+    void start();
+    void stop();
+    KeyReader::Error read(iButtonKey* key);
+    KeyReader(OneWireMaster* onewire_master);
+    ~KeyReader();
+
+private:
+    bool read_key(iButtonKeyType* key_type, uint8_t* data, uint8_t data_size);
+    bool verify_key(iButtonKeyType key_type, const uint8_t* const data, uint8_t data_size);
+
+    // cyfral and metakom readers data
+    void comparator_trigger_callback(void* hcomp, void* comp_ctx);
+    void (*comparator_callback_pointer)(void* hcomp, void* comp_ctx);
+
+    void start_comaparator(void);
+    void stop_comaparator(void);
+    uint32_t last_dwt_value;
+
+    CyfralDecoder cyfral_decoder;
+    MetakomDecoder metakom_decoder;
+
+    // mode
+    uint32_t read_mode_switch_time;
+    enum class ReadMode : uint8_t {
+        CYFRAL_METAKOM,
+        DALLAS,
+    };
+    ReadMode read_mode;
+
+    // one wire
+    OneWireMaster* onewire_master;
+
+    void switch_to(ReadMode mode);
+    void switch_mode_if_needed();
+};