* add pruned-rnnt2 recipe for alimeeting dataset
* update code for merging
* change LilcomHdf5Writer to ChunkedLilcomHdf5Writer
* change for test.yml
* change for test.yml
* change for test.yml
* change for workflow yml
* change for yml
* change for yml
* change for README.md
* change for yml
* solve the conflicts
* solve the conflicts