[FL-3068] SubGhz: add Holtek_ht12x protocol (#2187)

* SubGhz: add Holtek_ht12x protocol
* SubGhz: add unit_test holtek_ht12x
* SubGhz: correct string formatting

Co-authored-by: あく <alleteam@gmail.com>

lib/subghz/protocols/holtek_ht12x.h

@@ -0,0 +1,107 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_HOLTEK_HT12X_NAME "Holtek_HT12X"
+
+typedef struct SubGhzProtocolDecoderHoltek_HT12X SubGhzProtocolDecoderHoltek_HT12X;
+typedef struct SubGhzProtocolEncoderHoltek_HT12X SubGhzProtocolEncoderHoltek_HT12X;
+
+extern const SubGhzProtocolDecoder subghz_protocol_holtek_th12x_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_holtek_th12x_encoder;
+extern const SubGhzProtocol subghz_protocol_holtek_th12x;
+
+/**
+ * Allocate SubGhzProtocolEncoderHoltek_HT12X.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderHoltek_HT12X* pointer to a SubGhzProtocolEncoderHoltek_HT12X instance
+ */
+void* subghz_protocol_encoder_holtek_th12x_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderHoltek_HT12X.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek_HT12X instance
+ */
+void subghz_protocol_encoder_holtek_th12x_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek_HT12X instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_holtek_th12x_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek_HT12X instance
+ */
+void subghz_protocol_encoder_holtek_th12x_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek_HT12X instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_holtek_th12x_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderHoltek_HT12X.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderHoltek_HT12X* pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ */
+void* subghz_protocol_decoder_holtek_th12x_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderHoltek_HT12X.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ */
+void subghz_protocol_decoder_holtek_th12x_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderHoltek_HT12X.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ */
+void subghz_protocol_decoder_holtek_th12x_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_holtek_th12x_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_holtek_th12x_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderHoltek_HT12X.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param preset The modulation on which the signal was received, SubGhzRadioPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_holtek_th12x_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderHoltek_HT12X.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_holtek_th12x_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek_HT12X instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_holtek_th12x_get_string(void* context, FuriString* output);