Float buffers cleanup from Dirac structures

[x] Buffer cleanup in structures:
DIRAC_ONSET_DETECTION_STATE, DIRAC_DECORR_PARAMS,
SPAT_PARAM_REND_COMMON_DATA, DIRAC_OUTPUT_SYNTHESIS_PARAMS,
DIRAC_REND_DATA, DIRAC_DEC_BIN_DATA, HRTFS_PARAMBIN,
MASA_PREREND_DATA, DIRAC_ANA_DATA, MCMASA_ANA_DATA,
TDREND_HRFILT_FiltSet_t
[x] Converted ivas_lfe_window_init. Integrated at decoder calling place
[x] Restoring ivas_param_mc_dec_render, ivas_dirac_dec_onset_detection_open and ivas_dirac_dec_decorr_open
[x] Basop and cleanup of ivas_dirac_dec_onset_detection_process_fx and lattice2allpass_fx
[x] Removed dependency of hoa_encoder_len from DIRAC_REND_DATA
[x] Disabling ivas_td_binaural_close and TDREND_MIX_Dealloc