Floating-point leftovers: lib_enc/lib_enc_fx.c, IVAS_ENC_FeedObjectMetadata()
# Bug description
In IVAS_ENC_FeedObjectMetadata() there is a block of code which apparently converts floating-point object metadata into fixed-point representation:
```
Word32 azimuth_fx = float_to_fix( metadata.azimuth, Q22 ); /* Q22 */
Word32 elevation_fx = float_to_fix( metadata.elevation, Q22 ); /* Q22 */
Word16 radius_fx = float_to_fix16( metadata.radius, Q9 ); /* Q9 */
Word32 yaw_fx = float_to_fix( metadata.yaw, Q22 ); /* Q22 */
Word32 pitch_fx = float_to_fix( metadata.pitch, Q22 ); /* Q22 */
```
The struct IVAS_ISM_METADATA has apparently both representations - fx and fl, so it's strange that the floating-point values are used:
```
typedef struct _IVAS_ISM_METADATA
{
Word32 azimuth_fx; /* Q22 */
Word32 elevation_fx; /* Q22 */
Word16 radius_fx; /* Q9 */
Word32 spread_fx; /* Q22 */
Word32 gainFactor_fx; /* Q31 */
Word32 yaw_fx; /* Q22 */
Word32 pitch_fx; /* Q22 */
float azimuth;
float elevation;
float radius;
float spread;
float gainFactor;
float yaw;
float pitch;
Word16 non_diegetic_flag;
} IVAS_ISM_METADATA;
```
issue