Testsuite: add various missing files to source tarball

11 jobs for master in 72 minutes and 2 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #13351
build_binaries

00:11:05

passed #13352
build_doc

00:01:38

 
  Test And Pkg
passed #13355
macOS
pkg_macOS

00:13:30

passed #13353
pkg_source

00:02:46

passed #13354
pkg_windows

00:24:50

passed #13359
test_dynare++

00:14:50

passed #13356
test_matlab

00:56:42

manual #13358
allowed to fail manual
test_octave
manual #13357
allowed to fail manual
test_old_matlab
 
  Deploy
passed #13360
restricted
deploy_manual_unstable

00:00:24

passed #13361
restricted
deploy_snapshot_unstable

00:01:13