Infrared RCA Protocol + Update docs

Thanks to anonymous contributor for protocol implementation and testing

lib/infrared/encoder_decoder/rca/infrared_encoder_rca.c

@@ -0,0 +1,37 @@
+#include "infrared_protocol_rca_i.h"
+
+#include <core/check.h>
+
+void infrared_encoder_rca_reset(void* encoder_ptr, const InfraredMessage* message) {
+    furi_assert(encoder_ptr);
+    furi_assert(message);
+
+    InfraredCommonEncoder* encoder = encoder_ptr;
+    infrared_common_encoder_reset(encoder);
+
+    uint32_t* data = (void*)encoder->data;
+
+    uint8_t address = message->address;
+    uint8_t address_inverse = ~address;
+    uint8_t command = message->command;
+    uint8_t command_inverse = ~command;
+
+    *data = address & 0xF;
+    *data |= command << 4;
+    *data |= (address_inverse & 0xF) << 12;
+    *data |= command_inverse << 16;
+
+    encoder->bits_to_encode = encoder->protocol->databit_len[0];
+}
+
+void* infrared_encoder_rca_alloc(void) {
+    return infrared_common_encoder_alloc(&infrared_protocol_rca);
+}
+
+void infrared_encoder_rca_free(void* encoder_ptr) {
+    infrared_common_encoder_free(encoder_ptr);
+}
+
+InfraredStatus infrared_encoder_rca_encode(void* encoder_ptr, uint32_t* duration, bool* level) {
+    return infrared_common_encode(encoder_ptr, duration, level);
+}