feat(speech-to-text-v1): parameters speechDetectorSensitivity, backgroundAudioSuppression, added to recognize

also added to `recognizeUsingWebSocket` and `createJob`

additionally, new speech models added: IT_IT_BROADBANDMODEL, IT_IT_NARROWBANDMODEL, NL_NL_BROADBANDMODEL, NL_NL_NARROWBANDMODEL

Author: dpopp07

lib/recognize-stream.ts

@@ -177,6 +177,8 @@ class RecognizeStream extends Duplex {
       'redaction',
       'end_of_phrase_silence_time',
       'split_transcript_at_phrase_end',
+      'speech_detector_sensitivity',
+      'background_audio_suppression',
     ];
     const openingMessage = processUserParameters(options, openingMessageParamsAllowed);
     openingMessage.action = 'start';