Adapter for Fraunhofer LC3plus Coddec API

src/btstack_lc3plus_fraunhofer.h : only uses suitable subset for lc3 testing

typedef struct {
    btstack_lc3_frame_duration_t    frame_duration;
    uint16_t                        octets_per_frame;
    uint16_t                        samples_per_frame;
    uint32_t                        sample_rate;
    // decoder must be 4-byte aligned
    uint8_t                         decoder[LC3PLUS_DEC_MAX_SIZE];
} btstack_lc3plus_fraunhofer_decoder_t;

typedef struct {
    btstack_lc3_frame_duration_t    frame_duration;
    uint16_t                        octets_per_frame;
    uint32_t                        sample_rate;
    // encoder must be 4-byte aligned
    uint8_t                         encoder[LC3PLUS_ENC_MAX_SIZE];
} btstack_lc3plus_fraunhofer_encoder_t;

/**
 * Init LC3 Decoder Instance
 * @param context for Fraunhofer LC3plus decoder
 */
const btstack_lc3_decoder_t * btstack_lc3plus_fraunhofer_decoder_init_instance(btstack_lc3plus_fraunhofer_decoder_t * context);

/**
 * Init LC3 Encoder Instance
 * @param context for Fraunhofer LC3plus encoder
 */
const btstack_lc3_encoder_t * btstack_lc3plus_fraunhofer_encoder_init_instance(btstack_lc3plus_fraunhofer_encoder_t * context);