JS: Add typedocs for all extra modules

applications/system/js_app/packages/fz-sdk/subghz/index.d.ts

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+/**
+ * Module for using Sub-GHz transciever
+ * @version Available with JS feature `subghz`
+ * @module
+ */
+
+/**
+ * @brief Initialize Sub-GHz module
+ */
+export declare function setup(): void;
+
+/**
+ * @brief Deinitialize Sub-GHz module
+ */
+export declare function end(): void;
+
+/**
+ * @brief Set radio to receive mode
+ */
+export declare function setRx(): void;
+
+/**
+ * @brief Set radio to idle mode
+ */
+export declare function setIdle(): void;
+
+/**
+ * @brief Return current RSSI on current frequency, or undefined if radio is not in receive mode
+ */
+export declare function getRssi(): number | undefined;
+
+type RadioState = "RX" | "TX" | "IDLE" | "";
+
+/**
+ * @brief Get current radio mode/state
+ */
+export declare function getState(): RadioState;
+
+/**
+ * @brief Get currently selected frequency
+ */
+export declare function getFrequency(): number;
+
+/**
+ * @brief Change current frequency, radio must be in idle mode
+ * 
+ * Returns the effective frequency, since radio module cant use all precise
+ * values and instead chooses closest one available
+ * 
+ * @param frequency What frequency to use
+ */
+export declare function setFrequency(frequency: number): number;
+
+/**
+ * @brief Check whether the radio module in use is internal or external
+ */
+export declare function isExternal(): boolean;
+
+/**
+ * @brief Transmit a .sub file, return true on success or error on failure
+ * @param path What .sub file to transmit
+ * @param repeat How many times to repeat the signal
+ */
+export declare function transmitFile(path: string, repeat?: number): true;