Add support for new whisper.cpp project structure

Remove opencl feature, removed in whisper.cpp
Add openmp feature and enable by default as in whisper.cpp
Update bindings

src/whisper_params.rs

@@ -220,16 +220,6 @@ impl<'a, 'b> FullParams<'a, 'b> {
         self.fp.max_tokens = max_tokens;
     }
 
-    /// # EXPERIMENTAL
-    ///
-    /// Speed up audio ~2x by using phase vocoder.
-    /// Note that this can significantly reduce the accuracy of the transcription.
-    ///
-    /// Defaults to false.
-    pub fn set_speed_up(&mut self, speed_up: bool) {
-        self.fp.speed_up = speed_up;
-    }
-
     /// # EXPERIMENTAL
     ///
     /// Enables debug mode, such as dumping the log mel spectrogram.