MT use case and notebook exportation

[hepengfe]

This PR creates a tutorial for MT that wraps a T5 model to do MT inference tasks.
It also includes .nbautoexport which is configuration for automatic notebook exportation.

Description of changes

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Test Conducted

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[codecov]

Codecov Report

Merging #653 (0822dc7) into master (358377e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #653   +/-   ##
=======================================
  Coverage   80.90%   80.90%           
=======================================
  Files         240      240           
  Lines       17362    17362           
=======================================
  Hits        14047    14047           
  Misses       3315     3315           

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