Parameterize BNO055 (IMU), Modify published message, and more

[yameatmeyourdead]

• [ ] Instead of publishing our own BNO055Data msg, publish a ROS2 sensor_msgs::msg::Imu and sensor_msgs::msg::Temp
• [ ] Publish calibration data in separate message (std_msgs::msg::Byte_Multi_Array)
• [ ] Parameterize update rate, bus, and address.
• [ ] Add documentation to bno055_node.cpp
• [ ] Add automatic retry with exponential backoff (to a defined limit) in case bus or address is not found.