Dynare++: add some generated files to artifacts and .gitignore

.gitignore

@@ -117,6 +117,10 @@ doc/internals/ltxpng
 /dynare++/src/dynglob_tab.hh
 /dynare++/tl/testing/tests
 /dynare++/tl/testing/tests.exe
+/dynare++/tests/*.jnl
+/dynare++/tests/*.m
+/dynare++/tests/*.mat
+/dynare++/tests/*.dump
 !/dynare++/extern/R/Makefile
 
 # Windows

.gitlab-ci.yml

@@ -107,6 +107,10 @@ test_dynare++:
   artifacts:
     paths:
       - dynare++/kord/out.txt
+      - dynare++/tests/*.jnl
+      - dynare++/tests/*.m
+      - dynare++/tests/*.mat
+      - dynare++/tests/*.dump
 
 deploy_manual_unstable:
   stage: deploy