Camera_driver: Update doxygen documentation of camera driver

resources/FC_camera/App/butcube_imager.hpp

@@ -16,17 +16,44 @@
 using namespace std;
 typedef unsigned int uint;
 
+/**
+ * @brief Captures image data from camera, control power to camera and transmit data on selected interfaces
+ *          Currently is only UART interface supported
+ */
 class ButCube_imager
 {
 private:
+    /**
+     * @brief UART interfaces to which data will be exported, interfaces muse be configured in advance
+     */
     vector<UART_HandleTypeDef> uart_output_interfaces;
 
 public:
+    /**
+     * @brief Construct a new ButCube_imager object
+     */
     ButCube_imager() = default;
 
+    /**
+     * @brief Add UART output to list on which data are exported
+     *
+     * @param uart_output   UART output to which export data from camera
+     * @return int
+     */
     int Add_output(UART_HandleTypeDef uart_output);
 
+    /**
+     * @brief Transmit data from source to selected interfaces
+     *
+     * @param source    Source of image data
+     * @return int      Count of bytes exported
+     */
     int Transmit(vector<uint8_t> source);
 
+    /**
+     * @brief Enable or power to camera, controls load switch on camera power rail
+     *
+     * @param state true = Enabled, false = Disabled
+     */
     void Camera_power(bool state);
 };