SubGhz: sending / receiving messages via subghz (#851)

* SubGhz: add worker subghz_txrx
* SubGhz: added support for transferring Russian characters and support for backspace in CLI subghz_txrx
* SubGhz: refactoring subghz_txrx_worker, added a callback for accepting data in an empty one RX buffer
* SubGhz: fix conflict
* SubGhz: fix syntax errors
* Cli: document string_move usage and its behavior
* FuriHal: update subghz api and documentation. Subghz: move chat to subghz cli subcommand.
* Subghz: update text in chat cli

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

firmware/targets/furi-hal-include/furi-hal-subghz.h

@@ -20,6 +20,7 @@ typedef enum {
     FuriHalSubGhzPresetOok650Async,     /**< OOK, bandwidth 650kHz, asynchronous */
     FuriHalSubGhzPreset2FSKDev238Async, /**< FM, deviation 2.380371 kHz, asynchronous */
     FuriHalSubGhzPreset2FSKDev476Async, /**< FM, deviation 4.760742 kHz, asynchronous */
+    FuriHalSubGhzPresetMSK99_97KbAsync, /**< MSK, deviation 47.60742 kHz, 99.97Kb/s, asynchronous */
 } FuriHalSubGhzPreset;
 
 /** Switchable Radio Paths */
@@ -90,6 +91,18 @@ void furi_hal_subghz_load_patable(const uint8_t data[8]);
  */
 void furi_hal_subghz_write_packet(const uint8_t* data, uint8_t size);
 
+/** Check if recieve pipe is not empty
+ *
+ * @return     true if not empty
+ */
+bool furi_hal_subghz_rx_pipe_not_empty();
+
+/** Check if recieved data crc is valid
+ *
+ * @return     true if valid
+ */
+bool furi_hal_subghz_is_rx_data_crc_valid();
+
 /** Read packet from FIFO
  *
  * @param      data  pointer
@@ -148,6 +161,14 @@ bool furi_hal_subghz_is_frequency_valid(uint32_t value);
  */
 uint32_t furi_hal_subghz_set_frequency_and_path(uint32_t value);
 
+/** Сheck if transmission is allowed on this frequency for your flipper region
+ *
+ * @param      value  frequency in Hz
+ *
+ * @return     true if allowed
+ */
+bool furi_hal_subghz_is_tx_allowed(uint32_t value);
+
 /** Set frequency
  *
  * @param      value  frequency in Hz