[WIP] create recipe for acesinger

[linyueqian]

What?

create recipe for acesinger

[ftshijt]

Also please add an entry in readme (egs2/README.md

[ftshijt]

LGTM! will merge it after CI passed

[codecov]

Codecov Report

Merging #5431 (282ed41) into master (92207e2) will not change coverage.
Report is 36 commits behind head on master.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5431   +/-   ##
=======================================
  Coverage   77.17%   77.17%           
=======================================
  Files         684      684           
  Lines       62643    62643           
=======================================
  Hits        48345    48345           
  Misses      14298    14298           

Flag	Coverage Δ
test_configuration_espnet2	∅ <ø> (∅)
test_integration_espnet1	65.73% <ø> (-0.03%)	⬇️
test_integration_espnet2	49.10% <ø> (ø)
test_python_espnet1	19.96% <ø> (ø)
test_python_espnet2	52.28% <ø> (-0.01%)	⬇️
test_utils	23.10% <ø> (ø)

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[sw005320]

Please add README.md to include the results and pre-trained model links in a follow-up PR.