High mld fixes for masa format, acelp Q-corrections and code cleanup

[x] Corrected improper basops used in implementation of tdm_configure_enc_fx
[x] MLD improvement for ltv_basop_encoder-MASA 2TC at 24.4 kbps, 48kHz in, 48kHz out, EXT out
[x] Aligning the Q-factor Aq and Aw in Acelp to Q12
[x] MLD improvement for [ltv_basop_encoder-Stereo downmix to bit-exact EVS at 13200 kbps, 32kHz in, 32kHz out]
[x] removed empty/unnecessary files from workspace and some BASOPs changes