Add zh-TW translations.

4 jobs from translation in 4 minutes and 33 seconds
Status Job ID Name Coverage
  Prepare
passed #672
setup-test-env

02:23

 
  Review
passed #675
eslint

00:50

failed #674
i18n-tasks

00:22

passed #673
rubocop

00:56

 
Name Stage Failure
failed
i18n-tasks Review
yarn install v1.9.4
[1/4] Resolving packages...
success Already up-to-date.
Done in 0.51s.
$ bundle exec i18n-tasks check-normalized
The following data requires normalization:
Run `i18n-tasks normalize` to fix
config/locales/client/zh-TW.yml
ERROR: Job failed: exit code 1