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

applications/lfrfid/helpers/decoder_ioprox.h

@@ -0,0 +1,26 @@
+#pragma once
+#include <stdint.h>
+#include <atomic>
+#include "protocols/protocol_ioprox.h"
+
+class DecoderIoProx {
+public:
+    bool read(uint8_t* data, uint8_t data_size);
+    void process_front(bool polarity, uint32_t time);
+    DecoderIoProx();
+
+private:
+    uint32_t current_period_duration = 0;
+    uint32_t demodulation_sample_duration = 0;
+
+    bool current_demodulated_value = false;
+    bool demodulated_value_invalid = false;
+
+    uint8_t raw_data[8] = {0};
+    void store_data(bool data);
+
+    std::atomic<bool> ready;
+
+    void reset_state();
+    ProtocolIoProx ioprox;
+};