RFID: add support for Kantech IOProx cards (#1261)

applications/lfrfid/helpers/encoder_ioprox.h

@@ -0,0 +1,25 @@
+#pragma once
+#include "encoder_generic.h"
+#include "osc_fsk.h"
+
+class EncoderIoProx : public EncoderGeneric {
+public:
+    /**
+     * @brief init data to emulate
+     * 
+     * @param data 1 byte FC, 1 byte Version, 2 bytes code
+     * @param data_size must be 4
+     */
+    void init(const uint8_t* data, const uint8_t data_size) final;
+    void get_next(bool* polarity, uint16_t* period, uint16_t* pulse) final;
+    EncoderIoProx();
+    ~EncoderIoProx();
+
+private:
+    static const uint8_t card_data_max = 8;
+
+    uint8_t card_data[card_data_max];
+    uint8_t card_data_index;
+
+    OscFSK* fsk;
+};