Add gitlab ci

.gitlab-ci.yml

+image: debian
+before_script:
+  - apt-get update && apt-get -y install \
+    ninja-build
+    meson
+test:
+  stage: test
+  script:
+    - meson setup builddir
+    - meson compile -C builddir
+    - meson test -C builddir
+    - cat builddir/meson-logs/testlog.txt