Infrared RCA Protocol + Update docs

Thanks to anonymous contributor for protocol implementation and testing

lib/infrared/encoder_decoder/rca/infrared_decoder_rca.c

@@ -0,0 +1,45 @@
+#include "infrared_protocol_rca_i.h"
+#include <core/check.h>
+
+InfraredMessage* infrared_decoder_rca_check_ready(void* ctx) {
+    return infrared_common_decoder_check_ready(ctx);
+}
+
+bool infrared_decoder_rca_interpret(InfraredCommonDecoder* decoder) {
+    furi_assert(decoder);
+
+    uint32_t* data = (void*)&decoder->data;
+
+    uint8_t address = (*data & 0xF);
+    uint8_t command = (*data >> 4) & 0xFF;
+    uint8_t address_inverse = (*data >> 12) & 0xF;
+    uint8_t command_inverse = (*data >> 16) & 0xFF;
+    uint8_t inverse_address_inverse = (uint8_t)~address_inverse & 0xF;
+    uint8_t inverse_command_inverse = (uint8_t)~command_inverse;
+
+    if((command == inverse_command_inverse) && (address == inverse_address_inverse)) {
+        decoder->message.protocol = InfraredProtocolRCA;
+        decoder->message.address = address;
+        decoder->message.command = command;
+        decoder->message.repeat = false;
+        return true;
+    }
+
+    return false;
+}
+
+void* infrared_decoder_rca_alloc(void) {
+    return infrared_common_decoder_alloc(&infrared_protocol_rca);
+}
+
+InfraredMessage* infrared_decoder_rca_decode(void* decoder, bool level, uint32_t duration) {
+    return infrared_common_decode(decoder, level, duration);
+}
+
+void infrared_decoder_rca_free(void* decoder) {
+    infrared_common_decoder_free(decoder);
+}
+
+void infrared_decoder_rca_reset(void* decoder) {
+    infrared_common_decoder_reset(decoder);
+}