meson: declare dependency

This allows using libxcvt as a subproject.

Signed-off-by: Simon Ser <contact@emersion.fr>
5 jobs for declare-dep in 3 minutes and 44 seconds (queued for 8 seconds)
Status Name Job ID Coverage
  Sanity Check
passed check-ci-script #15022952

00:00:44

passed check-commit #15022953

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passed check-merge-request #15022954

00:00:14

 
  Prep
passed prep-fedora-34 #15022955

00:02:30

 
  Build
passed build-fedora-34 #15022956

00:00:23