[Feature request] Reducing logging (stdout) information when initializing TTS

[nisanb]

Hi, I would hope for the option to reduce the verbosity (or mute all) output messages when initializing TTS.

Just some output when I initialize:

> tts_models/en/ljspeech/tacotron2-DDC is already downloaded.
 > vocoder_models/en/ljspeech/hifigan_v2 is already downloaded.
 > Using model: Tacotron2
 > Setting up Audio Processor...
 | > sample_rate:22050
 | > resample:False
 | > num_mels:80
 | > log_func:np.log
 | > min_level_db:-100
 | > frame_shift_ms:None
 | > frame_length_ms:None
 | > ref_level_db:20
 | > fft_size:1024
 | > power:1.5
 | > preemphasis:0.0
 | > griffin_lim_iters:60
 | > signal_norm:False

[eginhard]

In our fork (available via pip install coqui-tts) the (vast majority of) print statements were replaced with the Python standard lib's logging. This should make it easy to configure the verbosity as needed.

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