Dataset creation tool based on CTC-segmentation
Adding a tool for an ASR dataset creation.  
Long audio files and corresponding transcripts are segmented with the algorithm described in [CTC-Segmentation of Large Corpora for German End-to-end Speech Recognition](https://arxiv.org/pdf/2007.09127.pdf).  

Provided functionality:
- a complete pipeline from audio and text pre-processing, including minimal normalization needed for proper alignment with [ctc_segmentation package](https://github.com/lumaku/ctc-segmentation) to manifest generation and verification utils
- support for parallel segmentation of multiple files

A tutorial on how to use the tool is included.