SubGhz: Add Chamberlain 7-Code, Chamberlain 8-Code, Chamberlain 9-Code (#1288)

* SubGhz: fix protocol MegaCode start duration
* SubGhz:  add reception Chamberlain Code 7, 8, 9 protocols
* SubGhz: Generating an upload from HEX data and a duration of 1 bit
* SubGhz: add transmit Chamberlain Code 7, 8, 9 protocol
* SubGhz: Rename Firefly -> Linear

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

lib/subghz/protocols/linear.h

@@ -0,0 +1,109 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_LINEAR_NAME "Linear"
+
+typedef struct SubGhzProtocolDecoderLinear SubGhzProtocolDecoderLinear;
+typedef struct SubGhzProtocolEncoderLinear SubGhzProtocolEncoderLinear;
+
+extern const SubGhzProtocolDecoder subghz_protocol_linear_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_linear_encoder;
+extern const SubGhzProtocol subghz_protocol_linear;
+
+/**
+ * Allocate SubGhzProtocolEncoderLinear.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderLinear* pointer to a SubGhzProtocolEncoderLinear instance
+ */
+void* subghz_protocol_encoder_linear_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderLinear.
+ * @param context Pointer to a SubGhzProtocolEncoderLinear instance
+ */
+void subghz_protocol_encoder_linear_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderLinear instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_linear_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderLinear instance
+ */
+void subghz_protocol_encoder_linear_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderLinear instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_linear_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderLinear.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderLinear* pointer to a SubGhzProtocolDecoderLinear instance
+ */
+void* subghz_protocol_decoder_linear_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderLinear.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ */
+void subghz_protocol_decoder_linear_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderLinear.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ */
+void subghz_protocol_decoder_linear_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_linear_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_linear_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderLinear.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param frequency The frequency at which the signal was received, Hz
+ * @param preset The modulation on which the signal was received, FuriHalSubGhzPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_linear_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderLinear.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_linear_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderLinear instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_linear_get_string(void* context, string_t output);